The modern Olympic Games or Olympics ( French : Jeux olympiques  ) are leading international sporting events featuring summer and winter sports competitions in which thousands of athletes from around the world participate in a variety of competitions . The Olympic Games are considered the world's foremost sports competition with more than 200 nations participating.  The Olympic Games are held every four years , with the Summer and Winter Games alternating by occurring every four years but two years apart.
Their creation was inspired by the ancient Olympic Games , which were held in Olympia, Greece , from the 8th century BC to the 4th century AD. Baron Pierre de Coubertin founded the International Olympic Committee (IOC) in 1894, leading to the first modern Games in Athens in 1896. The IOC is the governing body of the Olympic Movement , with the Olympic Charter defining its structure and authority.
The evolution of the Olympic Movement during the 20th and 21st centuries has resulted in several changes to the Olympic Games. Some of these adjustments include the creation of the Winter Olympic Games for ice and winter sports, the Paralympic Games for athletes with a disability, and the Youth Olympic Games for teenage athletes. The Deaflympics and Special Olympics are also endorsed by the IOC. The IOC has had to adapt to a variety of economic, political, and technological advancements.
The advent of the state-sponsored "full-time amateur athlete" of the Eastern Bloc countries further eroded the ideology of the pure amateur, as it put the self-financed amateurs of the Western countries at a disadvantage. The Soviet Union entered teams of athletes who were all nominally students, soldiers, or working in a profession, but many of whom were in reality paid by the state to train on a full-time basis.   As a result, the Olympics has shifted away from pure amateurism , as envisioned by Coubertin, to allowing participation of professional athletes . The growing importance of mass media created the issue of corporate sponsorship and commercialisation of the Games. World wars led to the cancellation of the 1916, 1940, and 1944 Games. Large boycotts during the Cold War limited participation in the 1980 and 1984 Games. Although a boycott led by the Soviet Union depleted the field in certain sports, 140 National Olympic Committees took part in the 1984 Olympics , which was a record at the time.
The Olympic Movement consists of international sports federations (IFs), National Olympic Committees (NOCs), and organising committees for each specific Olympic Games. As the decision-making body, the IOC is responsible for choosing the host city for each Games, and organises and funds the Games according to the Olympic Charter. The IOC also determines the Olympic programme, consisting of the sports to be contested at the Games. There are several Olympic rituals and symbols, such as the Olympic flag and torch , as well as the opening and closing ceremonies . Over 13,000 athletes compete at the Summer and Winter Olympic Games in 33 different sports and nearly 400 events. The first, second, and third-place finishers in each event receive Olympic medals : gold, silver, and bronze, respectively.
The Games have grown so much that nearly every nation is now represented. This growth has created numerous challenges and controversies , including boycotts, doping , bribery, and a terrorist attack in 1972 . Every two years the Olympics and its media exposure provide unknown athletes with the chance to attain national and sometimes international fame. The Games also constitute an opportunity for the host city and country to showcase themselves to the world.
The Ancient Olympic Games were religious and athletic festivals held every four years at the sanctuary of Zeus in Olympia, Greece . Competition was among representatives of several city-states and kingdoms of Ancient Greece . These Games featured mainly athletic but also combat sports such as wrestling and the pankration , horse and chariot racing events. It has been widely written that during the Games, all conflicts among the participating city-states were postponed until the Games were finished. This cessation of hostilities was known as the Olympic peace or truce.  This idea is a modern myth because the Greeks never suspended their wars. The truce did allow those religious pilgrims who were travelling to Olympia to pass through warring territories unmolested because they were protected by Zeus.  The origin of the Olympics is shrouded in mystery and legend; one of the most popular myths identifies Heracles and his father Zeus as the progenitors of the Games.  According to legend, it was Heracles who first called the Games "Olympic" and established the custom of holding them every four years.  The myth continues that after Heracles completed his twelve labours , he built the Olympic Stadium as an honour to Zeus. Following its completion, he walked in a straight line for 200 steps and called this distance a " stadion " ( Greek : στάδιον , Latin : stadium , "stage"), which later became a unit of distance . The most widely accepted inception date for the Ancient Olympics is 776 BC; this is based on inscriptions, found at Olympia, listing the winners of a footrace held every four years starting in 776 BC.  The Ancient Games featured running events, a pentathlon (consisting of a jumping event, discus and javelin throws, a foot race, and wrestling), boxing, wrestling, pankration , and equestrian events.  Tradition has it that Coroebus , a cook from the city of Elis , was the first Olympic champion.
The Olympics were of fundamental religious importance, featuring sporting events alongside ritual sacrifices honouring both Zeus (whose famous statue by Phidias stood in his temple at Olympia ) and Pelops , divine hero and mythical king of Olympia. Pelops was famous for his chariot race with King Oenomaus of Pisatis . The winners of the events were admired and immortalised in poems and statues. The Games were held every four years, and this period, known as an Olympiad , was used by Greeks as one of their units of time measurement. The Games were part of a cycle known as the Panhellenic Games , which included the Pythian Games , the Nemean Games , and the Isthmian Games . 
The Olympic Games reached their zenith in the 6th and 5th centuries BC, but then gradually declined in importance as the Romans gained power and influence in Greece. While there is no scholarly consensus as to when the Games officially ended, the most commonly held date is 393 AD, when the emperor Theodosius I decreed that all pagan cults and practices be eliminated. Another date commonly cited is 426 AD, when his successor, Theodosius II , ordered the destruction of all Greek temples.
Various uses of the term "Olympic" to describe athletic events in the modern era have been documented since the 17th century. The first such event was the Cotswold Games or "Cotswold Olimpick Games", an annual meeting near Chipping Campden , England, involving various sports. It was first organised by the lawyer Robert Dover between 1612 and 1642, with several later celebrations leading up to the present day. The British Olympic Association , in its bid for the 2012 Olympic Games in London, mentioned these games as "the first stirrings of Britain's Olympic beginnings". 
L'Olympiade de la République , a national Olympic festival held annually from 1796 to 1798 in Revolutionary France also attempted to emulate the ancient Olympic Games.  The competition included several disciplines from the ancient Greek Olympics. The 1796 Games also marked the introduction of the metric system into sport. 
In 1850 an Olympian Class was started by William Penny Brookes at Much Wenlock , in Shropshire , England. In 1859, Brookes changed the name to the Wenlock Olympian Games . This annual sports festival continues to this day. The Wenlock Olympian Society was founded by Brookes on 15 November 1860.
Between 1862 and 1867, Liverpool held an annual Grand Olympic Festival. Devised by John Hulley and Charles Melly, these games were the first to be wholly amateur in nature and international in outlook, although only 'gentlemen amateurs' could compete. The programme of the first modern Olympiad in Athens in 1896 was almost identical to that of the Liverpool Olympics.  In 1865 Hulley, Brookes and E.G. Ravenstein founded the National Olympian Association in Liverpool, a forerunner of the British Olympic Association . Its articles of foundation provided the framework for the International Olympic Charter . In 1866, a national Olympic Games in Great Britain was organised at London's Crystal Palace . 
Greek interest in reviving the Olympic Games began with the Greek War of Independence from the Ottoman Empire in 1821. It was first proposed by poet and newspaper editor Panagiotis Soutsos in his poem "Dialogue of the Dead", published in 1833. Evangelos Zappas , a wealthy Greek-Romanian philanthropist, first wrote to King Otto of Greece , in 1856, offering to fund a permanent revival of the Olympic Games. Zappas sponsored the first Olympic Games in 1859, which was held in an Athens city square. Athletes participated from Greece and the Ottoman Empire. Zappas funded the restoration of the ancient Panathenaic Stadium so that it could host all future Olympic Games.
The stadium hosted Olympics in 1870 and 1875. Thirty thousand spectators attended that Games in 1870, though no official attendance records are available for the 1875 Games. In 1890, after attending the Olympian Games of the Wenlock Olympian Society , Baron Pierre de Coubertin was inspired to found the International Olympic Committee (IOC).  Coubertin built on the ideas and work of Brookes and Zappas with the aim of establishing internationally rotating Olympic Games that would occur every four years.  He presented these ideas during the first Olympic Congress of the newly created International Olympic Committee. This meeting was held from 16 to 23 June 1894, at the University of Paris . On the last day of the Congress, it was decided that the first Olympic Games to come under the auspices of the IOC would take place in Athens in 1896. The IOC elected the Greek writer Demetrius Vikelas as its first president.
The first Games held under the auspices of the IOC was hosted in the Panathenaic Stadium in Athens in 1896. The Games brought together 14 nations and 241 athletes who competed in 43 events.  Zappas and his cousin Konstantinos Zappas had left the Greek government a trust to fund future Olympic Games. This trust was used to help finance the 1896 Games.   George Averoff contributed generously for the refurbishment of the stadium in preparation for the Games. The Greek government also provided funding, which was expected to be recouped through the sale of tickets and from the sale of the first Olympic commemorative stamp set.
Greek officials and the public were enthusiastic about the experience of hosting an Olympic Games. This feeling was shared by many of the athletes, who even demanded that Athens be the permanent Olympic host city. The IOC intended for subsequent Games to be rotated to various host cities around the world. The second Olympics was held in Paris. 
Changes and adaptations
After the success of the 1896 Games, the Olympics entered a period of stagnation that threatened their survival. The Olympic Games held at the Paris Exposition in 1900 and the Louisiana Purchase Exposition at St. Louis in 1904 were side shows. The Games in Paris did not have a stadium, but were notable for being the first time women took part in the Games. When the St. Louis Games were celebrated roughly 650 athletes participated, but 580 were from the United States . The homogeneous nature of these celebrations was a low point for the Olympic Movement.  The Games rebounded when the 1906 Intercalated Games (so-called because they were the second Games held within the third Olympiad ) were held in Athens. These Games were, but are not now, officially recognised by the IOC and no Intercalated Games have been held since. The Games attracted a broad international field of participants and generated great public interest. This marked the beginning of a rise in both the popularity and the size of the Olympics. 
The Winter Olympics was created to feature snow and ice sports that were logistically impossible to hold during the Summer Games. Figure skating (in 1908 and 1920) and ice hockey (in 1920) were featured as Olympic events at the Summer Olympics. The IOC desired to expand this list of sports to encompass other winter activities. At the 1921 Olympic Congress in Lausanne , it was decided to hold a winter version of the Olympic Games. A winter sports week (it was actually 11 days) was held in 1924 in Chamonix , France, in connection with the Paris Games held three months later; this event became the first Winter Olympic Games .  Although it was intended that the same country host both the Winter and Summer Games in a given year, this idea was quickly abandoned. The IOC mandated that the Winter Games be celebrated every four years on the same year as their summer counterpart.  This tradition was upheld until the 1992 Games in Albertville , France; after that, beginning with the 1994 Games , the Winter Olympics were held every four years, two years after each Summer Olympics.
In 1948, Sir Ludwig Guttmann , determined to promote the rehabitation of soldiers after World War II , organised a multi-sport event between several hospitals to coincide with the 1948 London Olympics . Guttmann's event, known then as the Stoke Mandeville Games , became an annual sports festival. Over the next twelve years, Guttmann and others continued their efforts to use sports as an avenue to healing. For the 1960 Olympic Games in Rome , Guttmann brought 400 athletes to compete in the "Parallel Olympics", which became known as the first Paralympics . Since then, the Paralympics have been held in every Olympic year. Since the 1988 Summer Olympics in Seoul , South Korea, the host city for the Olympics has also played host to the Paralympics.  In 2001 the International Olympic Committee (IOC) and the International Paralympic Committee (IPC) signed an agreement guaranteeing that host cities would be contracted to manage both the Olympic and Paralympic Games.   The agreement came into effect at the 2008 Summer Games in Beijing, and the 2010 Winter Games in Vancouver. Chairman of the London organising committee , Lord Coe , said about the 2012 Summer Paralympics and Olympics in London that,
We want to change public attitudes towards disability, celebrate the excellence of Paralympic sport and to enshrine from the very outset that the two Games are an integrated whole. 
In 2010, the Olympic Games were complemented by the Youth Games, which give athletes between the ages of 14 and 18 the chance to compete. The Youth Olympic Games were conceived by IOC president Jacques Rogge in 2001 and approved during the 119th Congress of the IOC.  The first Summer Youth Games were held in Singapore from 14–26 August 2010, while the inaugural Winter Games were hosted in Innsbruck , Austria, two years later.  These Games will be shorter than the senior Games; the summer version will last twelve days, while the winter version will last nine days.  The IOC allows 3,500 athletes and 875 officials to participate at the Summer Youth Games, and 970 athletes and 580 officials at the Winter Youth Games.  The sports to be contested will coincide with those scheduled for the senior Games, however there will be variations on the sports including mixed NOC and mixed gender teams as well as a reduced number of disciplines and events.
From 241 participants representing 14 nations in 1896, the Games have grown to about 10,500 competitors from 204 nations at the 2012 Summer Olympics .  The scope and scale of the Winter Olympics is smaller. For example, Sochi hosted 2,873 athletes from 88 nations competing in 98 events during the 2014 Winter Olympics . During the Games most athletes and officials are housed in the Olympic Village . This village is intended to be a self-contained home for all the Olympic participants, and is furnished with cafeterias, health clinics, and locations for religious expression. 
The IOC allowed the formation of National Olympic Committees representing nations that did not meet the strict requirements for political sovereignty that other international organisations demand. As a result, colonies and dependencies are permitted to compete at Olympic Games. Examples of this include territories such as Puerto Rico , Bermuda , and Hong Kong , all of which compete as separate nations despite being legally a part of another country.  The current version of the Charter allows for the establishment of new National Olympic Committees to represent nations which qualify as "an independent State recognised by the international community".  Therefore, it did not allow the formation of National Olympic Committees for Sint Maarten and Curaçao when they gained the same constitutional status as Aruba in 2010, although the IOC had recognised the Aruban Olympic Committee in 1986.   After 2012, Netherlands Antilles athletes can choose to represent either the Netherlands or Aruba . 
Cost of the Games
The Oxford Olympics Study 2016 found that sports-related costs for the Summer Games since 1960 is on average USD 5.2 billion and for the Winter Games USD 3.1 billion. This does not include wider infrastructure costs like roads, urban rail, and airports, which often cost as much or more than the sports-related costs. The most expensive Summer Games are London 2012 at USD 15 billion and the most expensive Winter Games are Sochi 2014 at USD 51 billion.   Costs per athlete is on average USD 0.6 million for the Summer Games and USD 1.3 million for the Winter Games. For London 2012, cost per athlete was USD 1.4 million; for Sochi 2014, USD 7.9 million.
Where ambitious construction for the 1976 games in Montreal and 1980 games in Moscow had saddled organisers with expenses greatly in excess of revenues, Los Angeles strictly controlled expenses by using existing facilities except a swim stadium and a velodrome that were paid for by corporate sponsors. The Olympic Committee led by Peter Ueberroth used some of the profits to endow the LA84 Foundation to promote youth sports in Southern California, educate coaches and maintain a sports library. The 1984 Summer Olympics are often considered the most financially successful modern Olympics. 
Budget overruns are common for the Games. Average overrun for Games since 1960 is 156% in real terms,  which means that actual costs turned out to be on average 2.56 times higher than the budget that was estimated at the time of winning the bid to host the Games. Montreal 1976 had the highest cost overrun for Summer Games, and for any Games, at 720%; Lake Placid 1980 had the highest cost overrun for Winter Games, at 324%. London 2012 had a cost overrun of 76%, Sochi 2014 of 289%. 
Economic and social impact on host cities and countries
Many economists are sceptical about the economic benefits of hosting the Olympic Games, emphasising that such "mega-events" often have large costs while yielding relatively few tangible benefits in the long run.  Conversely hosting (or even bidding for) the Olympics appears to increase the host country's exports, as the host or candidate country sends a signal about trade openness when bidding to host the Games.  Moreover, research suggests that hosting the Summer Olympics has a strong positive effect on the philanthropic contributions of corporations headquartered in the host city, which seems to benefit the local nonprofit sector. This positive effect begins in the years leading up to the Games and might persist for several years afterwards, although not permanently. This finding suggests that hosting the Olympics might create opportunities for cities to influence local corporations in ways that benefit the local nonprofit sector and civil society. 
The Games have also had significant negative effects on host communities; for example, the Centre on Housing Rights and Evictions reports that the Olympics displaced more than two million people over two decades, often disproportionately affecting disadvantaged groups.  The 2014 Winter Olympics in Sochi were the most expensive Olympic Games in history, costing in excess of US$50 billion. According to a report by the European Bank for Reconstruction and Development that was released at the time of the games, this cost will not boost Russia's national economy, but may attract business to Sochi and the southern Krasnodar region of Russia in the future as a result of improved services.  But by December 2014, The Guardian stated that Sochi "now feels like a ghost town", citing the spread-out nature of the stadiums and arenas, the still-unfinished construction, and the overall effects Russia's political and economic turmoil.  Furthermore, at least four cities withdrew their bids for the 2022 Winter Olympics , citing the high costs or the lack of local support,  resulting in only a two-city race between Almaty , Kazakhstan and Beijing , China . Thus in July 2016, The Guardian stated that the biggest threat to the future of the Olympics is that very few cities want to host them. 
International Olympic Committee
The Olympic Movement encompasses a large number of national and international sporting organisations and federations, recognised media partners, as well as athletes, officials, judges, and every other person and institution that agrees to abide by the rules of the Olympic Charter.  As the umbrella organisation of the Olympic Movement, the International Olympic Committee (IOC) is responsible for selecting the host city, overseeing the planning of the Olympic Games, updating and approving the sports program, and negotiating sponsorship and broadcasting rights. 
The Olympic Movement is made of three major elements:
- International Federations (IFs) are the governing bodies that supervise a sport at an international level. For example, the International Federation of Association Football ( FIFA ) is the IF for association football, and the Fédération Internationale de Volleyball is the international governing body for volleyball. There are currently 35 IFs in the Olympic Movement, representing each of the Olympic sports. 
- National Olympic Committees (NOCs) represent and regulate the Olympic Movement within each country. For example, the United States Olympic Committee (USOC) is the NOC of the United States. There are currently 205 NOCs recognised by the IOC. 
- Organising Committees for the Olympic Games (OCOGs) are temporary committees responsible for the organisation of each Olympic Games. OCOGs are dissolved after each Games once the final report is delivered to the IOC. 
French and English are the official languages of the Olympic Movement. The other language used at each Olympic Games is the language of the host country (or languages, if a country has more than one official language apart from French or English). Every proclamation (such as the announcement of each country during the parade of nations in the opening ceremony) is spoken in these three (or more) languages, or the main two depending on whether the host country is an English or French speaking country.
The IOC has often been criticised for being an intractable organisation, with several members on the committee for life. The presidential terms of Avery Brundage and Juan Antonio Samaranch were especially controversial. Brundage was president for over 20 years, and during his tenure he protected the Olympics from political involvement and the influence of advertising. He was accused of both racism, for resisting exclusion of apartheid South Africa , and antisemitism . Under the Samaranch presidency, the office was accused of both nepotism and corruption.  Samaranch's ties with the Franco regime in Spain were also a source of criticism.
In 1998, it was reported that several IOC members had taken bribes from members of the Salt Lake City bid committee for the hosting of the 2002 Winter Olympics . The IOC pursued an investigation which led to the resignation of four members and expulsion of six others. The scandal set off further reforms that changed the way host cities were selected, to avoid similar cases in the future. 
The 1999, it was reported that the Nagano Olympic bid committee had spent approximately $14 million to entertain the 62 IOC members and many of their companions. The precise figures are unknown since Nagano, after the IOC asked that the entertainment expenditures not be made public, destroyed the financial records.  
A BBC documentary entitled Panorama : Buying the Games , aired in August 2004, investigated the taking of bribes in the bidding process for the 2012 Summer Olympics .  The documentary claimed it was possible to bribe IOC members into voting for a particular candidate city. After being narrowly defeated in their bid for the 2012 Summer Games, Parisian mayor Bertrand Delanoë specifically accused the British prime minister Tony Blair and the London Bid Committee (headed by former Olympic champion Sebastian Coe ) of breaking the bid rules. He cited French president Jacques Chirac as a witness; Chirac gave guarded interviews regarding his involvement.  The allegation was never fully explored. The Turin bid for the 2006 Winter Olympics was also shrouded in controversy. A prominent IOC member, Marc Hodler , strongly connected with the rival bid of Sion, Switzerland , alleged bribery of IOC officials by members of the Turin Organising Committee. These accusations led to a wide-ranging investigation. The allegations also served to sour many IOC members against Sion's bid and potentially helped Turin to capture the host city nomination. 
In July 2012, the Anti-Defamation League called the continued refusal by the International Olympic Committee to hold a moment of silence at the opening ceremony for the eleven Israeli athletes killed by Palestinian terrorists at the 1972 Munich Olympics , "a continuing stubborn insensitivity and callousness to the memory of the murdered Israeli athletes." 
Under national organising committees
The Olympics have been commercialised to various degrees since the initial 1896 Summer Olympics in Athens, when a number of companies paid for advertising,  including Kodak .  In 1908, Oxo , Odol mouthwash and Indian Foot Powder became official sponsors of the London Olympic Games .    Coca-Cola sponsored the 1928 Summer Olympics , and has subsequently remained a sponsor to the current time.  Before the IOC took control of sponsorship, national organising committees were responsible for negotiating their own contracts for sponsorship and the use of the Olympic symbols.
Under IOC control
The IOC originally resisted funding by corporate sponsors. It was not until the retirement of IOC president Avery Brundage , in 1972, that the IOC began to explore the potential of the television medium and the lucrative advertising markets available to them. Under the leadership of Juan Antonio Samaranch the Games began to shift toward international sponsors who sought to link their products to the Olympic brand. 
During the first half of the 20th century the IOC ran on a small budget.  As president of the IOC from 1952 to 1972, Avery Brundage rejected all attempts to link the Olympics with commercial interest. Brundage believed the lobby of corporate interests would unduly impact the IOC's decision-making. Brundage's resistance to this revenue stream meant the IOC left organising committees to negotiate their own sponsorship contracts and use the Olympic symbols. When Brundage retired the IOC had US$2 million in assets; eight years later the IOC coffers had swelled to US$45 million. This was primarily due to a shift in ideology toward expansion of the Games through corporate sponsorship and the sale of television rights. When Juan Antonio Samaranch was elected IOC president in 1980 his desire was to make the IOC financially independent.
The 1984 Summer Olympics became a watershed moment in Olympic history. The Los Angeles-based organising committee, led by Peter Ueberroth , was able to generate a surplus of US$225 million, which was an unprecedented amount at that time. The organising committee had been able to create such a surplus in part by selling exclusive sponsorship rights to select companies. The IOC sought to gain control of these sponsorship rights. Samaranch helped to establish The Olympic Programme (TOP) in 1985, in order to create an Olympic brand.  Membership in TOP was, and is, very exclusive and expensive. Fees cost US$50 million for a four-year membership. Members of TOP received exclusive global advertising rights for their product category, and use of the Olympic symbol, the interlocking rings , in their publications and advertisements.
Effect of television
The 1936 Summer Olympics in Berlin were the first Games to be broadcast on television, though only to local audiences.  The 1956 Winter Olympics were the first internationally televised Olympic Games,  and the following Winter Games had their broadcasting rights sold for the first time to specialised television broadcasting networks— CBS paid US$394,000 for the American rights, and the European Broadcasting Union (EBU) allocated US$660,000.  In the following decades the Olympics became one of the ideological fronts of the Cold War. Superpowers jockeyed for political supremacy, and the IOC wanted to take advantage of this heightened interest via the broadcast medium. The sale of broadcast rights enabled the IOC to increase the exposure of the Olympic Games, thereby generating more interest, which in turn created more appeal to advertisers time on television. This cycle allowed the IOC to charge ever-increasing fees for those rights. For example, CBS paid US$375 million for the American broadcast rights of the 1998 Nagano Games , while NBC spent US$3.5 billion for the American rights of all the Olympic Games from 2000 to 2012. 
Viewership increased exponentially from the 1960s until the end of the century. This was due to the use of satellites to broadcast live television worldwide in 1964, and the introduction of colour television in 1968.  Global audience estimates for the 1968 Mexico City Games was 600 million, whereas at the Los Angeles Games of 1984 , the audience numbers had increased to 900 million; that number swelled to 3.5 billion by the 1992 Summer Olympics in Barcelona. However, at the 2000 Summer Games in Sydney, NBC drew the lowest U.S. ratings for any Summer or Winter Olympics since 1968.  This was attributed to two factors: one was the increased competition from cable channels, the second was the internet, which was able to display results and video in real time. Television companies were still relying on tape-delayed content, which was becoming outdated in the information era.  A drop in ratings meant that television studios had to give away free advertising time. With such high costs charged to broadcast the Games, the added pressure of the internet, and increased competition from cable, the television lobby demanded concessions from the IOC to boost ratings. The IOC responded by making a number of changes to the Olympic program. At the Summer Games, the gymnastics competition was expanded from seven to nine nights, and a Champions Gala was added to draw greater interest. The IOC also expanded the swimming and diving programs, both popular sports with a broad base of television viewers. Finally, the American television lobby, namely NBC, was able to dictate when certain events were held so that they could be broadcast live during prime time in the United States. The results of these efforts were mixed: ratings for the 2006 Winter Games were significantly lower than those for the 2002 Games, while there was a sharp increase in viewership for the 2008 Summer Olympics, and the 2012 Summer Games became the most watched event in US television history. 
The sale of the Olympic brand has been controversial. The argument is that the Games have become indistinguishable from any other commercialised sporting spectacle. Specific criticism was levelled at the IOC for market saturation during the 1996 Atlanta and 2000 Sydney Games. The cities were awash in corporations and merchants attempting to sell Olympic-related wares. The IOC indicated that they would address this to prevent spectacles of over-marketing at future Games. Another criticism is that the Games are funded by host cities and national governments; the IOC incurs none of the cost, yet controls all the rights and profits from the Olympic symbols. The IOC also takes a percentage of all sponsorship and broadcast income. Host cities continue to compete ardently for the right to host the Games, even though there is no certainty that they will earn back their investments. Research has shown that trade is around 30 percent higher for countries that have hosted the Olympics. 
The Olympic Movement uses symbols to represent the ideals embodied in the Olympic Charter. The Olympic symbol, better known as the Olympic rings , consists of five intertwined rings and represents the unity of the five inhabited continents ( Africa , America , Asia , Australia and Europe ). The coloured version of the rings—blue, yellow, black, green, and red—over a white field forms the Olympic flag. These colours were chosen because every nation had at least one of them on its national flag. The flag was adopted in 1914 but flown for the first time only at the 1920 Summer Olympics in Antwerp, Belgium. It has since been hoisted during each celebration of the Games.  
The Olympic motto , Citius, Altius, Fortius , a Latin expression meaning "Faster, Higher, Stronger" was proposed by Pierre de Coubertin in 1894 and has been official since 1924. The motto was coined by Coubertin's friend, the Dominican priest Henri Didon OP, for a Paris youth gathering of 1891. 
Coubertin's Olympic ideals are expressed in the Olympic creed :
The most important thing in the Olympic Games is not to win but to take part, just as the most important thing in life is not the triumph but the struggle. The essential thing is not to have conquered but to have fought well. 
Months before each Games, the Olympic Flame is lit in Olympia in a ceremony that reflects ancient Greek rituals. A female performer, acting as a priestess, ignites a torch by placing it inside a parabolic mirror which focuses the sun's rays; she then lights the torch of the first relay bearer, thus initiating the Olympic torch relay that will carry the flame to the host city's Olympic stadium, where it plays an important role in the opening ceremony.  Though the flame has been an Olympic symbol since 1928 , the torch relay was only introduced at the 1936 Summer Games to promote the Third Reich .  
The Olympic mascot , an animal or human figure representing the cultural heritage of the host country, was introduced in 1968 . It has played an important part of the Games' identity promotion since the 1980 Summer Olympics , when the Russian bear cub Misha reached international stardom. The mascot of the Summer Olympics in London was named Wenlock after the town of Much Wenlock in Shropshire . Much Wenlock still hosts the Wenlock Olympian Games, which were an inspiration to Pierre de Coubertin for the Olympic Games. 
As mandated by the Olympic Charter , various elements frame the opening ceremony of the Olympic Games. This ceremony takes place before the events have occurred.   Most of these rituals were established at the 1920 Summer Olympics in Antwerp.  The ceremony typically starts with the hoisting of the host country's flag and a performance of its national anthem.   The host nation then presents artistic displays of music, singing, dance, and theatre representative of its culture.  The artistic presentations have grown in scale and complexity as successive hosts attempt to provide a ceremony that outlasts its predecessor's in terms of memorability. The opening ceremony of the Beijing Games reportedly cost $100 million, with much of the cost incurred in the artistic segment. 
After the artistic portion of the ceremony, the athletes parade into the stadium grouped by nation. Greece is traditionally the first nation to enter in order to honour the origins of the Olympics. Nations then enter the stadium alphabetically according to the host country's chosen language, with the host country's athletes being the last to enter. During the 2004 Summer Olympics , which was hosted in Athens, Greece , the Greek flag entered the stadium first, while the Greek delegation entered last. Speeches are given, formally opening the Games. Finally, the Olympic torch is brought into the stadium and passed on until it reaches the final torch carrier, often a successful Olympic athlete from the host nation, who lights the Olympic flame in the stadium's cauldron.  
The closing ceremony of the Olympic Games takes place after all sporting events have concluded. Flag-bearers from each participating country enter the stadium, followed by the athletes who enter together, without any national distinction.  Three national flags are hoisted while the corresponding national anthems are played: the flag of the current host country; the flag of Greece, to honour the birthplace of the Olympic Games; and the flag of the country hosting the next Summer or Winter Olympic Games.  The president of the organising committee and the IOC president make their closing speeches, the Games are officially closed, and the Olympic flame is extinguished.  In what is known as the Antwerp Ceremony, the mayor of the city that organised the Games transfers a special Olympic flag to the president of the IOC, who then passes it on to the mayor of the city hosting the next Olympic Games.  The next host nation then also briefly introduces itself with artistic displays of dance and theatre representative of its culture. 
As is customary, the men's marathon medals (at the Summer Olympics) or the men's 50 km cross-country skiing freestyle mass start medals (at the Winter Olympics) are presented as part of the Closing Ceremony, which take place later that day, in the Olympic Stadium, and are thus the last medal presentation of the Games.
A medal ceremony is held after each Olympic event is concluded. The winner, second and third-place competitors or teams stand on top of a three-tiered rostrum to be awarded their respective medals.  After the medals are given out by an IOC member, the national flags of the three medallists are raised while the national anthem of the gold medallist's country plays. Volunteering citizens of the host country also act as hosts during the medal ceremonies, as they aid the officials who present the medals and act as flag-bearers. 
The Olympic Games programme consists of 35 sports, 30 disciplines and 408 events. For example, wrestling is a Summer Olympic sport, comprising two disciplines: Greco-Roman and Freestyle . It is further broken down into fourteen events for men and four events for women, each representing a different weight class.  The Summer Olympics programme includes 26 sports, while the Winter Olympics programme features 15 sports.  Athletics , swimming , fencing , and artistic gymnastics are the only summer sports that have never been absent from the Olympic programme. Cross-country skiing , figure skating , ice hockey , Nordic combined , ski jumping , and speed skating have been featured at every Winter Olympics programme since its inception in 1924 . Current Olympic sports, like badminton , basketball , and volleyball , first appeared on the programme as demonstration sports , and were later promoted to full Olympic sports. Some sports that were featured in earlier Games were later dropped from the programme. 
Olympic sports are governed by international sports federations (IFs) recognised by the IOC as the global supervisors of those sports. There are 35 federations represented at the IOC. There are sports recognised by the IOC that are not included on the Olympic program. These sports are not considered Olympic sports, but they can be promoted to this status during a programme revision that occurs in the first IOC session following a celebration of the Olympic Games.  During such revisions, sports can be excluded or included in the programme on the basis of a two-thirds majority vote of the members of the IOC.  There are recognised sports that have never been on an Olympic programme in any capacity, including chess and surfing. 
In October and November 2004, the IOC established an Olympic Programme Commission, which was tasked with reviewing the sports on the Olympic programme and all non-Olympic recognised sports. The goal was to apply a systematic approach to establishing the Olympic programme for each celebration of the Games.  The commission formulated seven criteria to judge whether a sport should be included on the Olympic programme.  These criteria are history and tradition of the sport, universality, popularity of the sport, image, athletes' health, development of the International Federation that governs the sport, and costs of holding the sport.  From this study five recognised sports emerged as candidates for inclusion at the 2012 Summer Olympics: golf, karate, rugby union, roller sports and squash.  These sports were reviewed by the IOC Executive Board and then referred to the General Session in Singapore in July 2005. Of the five sports recommended for inclusion only two were selected as finalists: karate and squash.  Neither sport attained the required two-thirds vote and consequently they were not promoted to the Olympic programme.  In October 2009 the IOC voted to instate golf and rugby union as Olympic sports for the 2016 and 2020 Summer Olympic Games . 
The 114th IOC Session , in 2002, limited the Summer Games programme to a maximum of 28 sports, 301 events, and 10,500 athletes.  Three years later, at the 117th IOC Session , the first major programme revision was performed, which resulted in the exclusion of baseball and softball from the official programme of the 2012 London Games . Since there was no agreement in the promotion of two other sports, the 2012 programme featured just 26 sports.  The 2016 and 2020 Games will return to the maximum of 28 sports given the addition of rugby and golf. 
Amateurism and professionalism
The ethos of the aristocracy as exemplified in the English public school greatly influenced Pierre de Coubertin. The public schools subscribed to the belief that sport formed an important part of education, an attitude summed up in the saying mens sana in corpore sano , a sound mind in a sound body. In this ethos, a gentleman was one who became an all-rounder, not the best at one specific thing. There was also a prevailing concept of fairness, in which practising or training was considered tantamount to cheating. Those who practised a sport professionally were considered to have an unfair advantage over those who practised it merely as a hobby.
The exclusion of professionals caused several controversies throughout the history of the modern Olympics. The 1912 Olympic pentathlon and decathlon champion Jim Thorpe was stripped of his medals when it was discovered that he had played semi-professional baseball before the Olympics. His medals were posthumously restored by the IOC in 1983 on compassionate grounds.  Swiss and Austrian skiers boycotted the 1936 Winter Olympics in support of their skiing teachers, who were not allowed to compete because they earned money with their sport and were thus considered professionals. 
As class structure evolved through the 20th century, the definition of the amateur athlete as an aristocratic gentleman became outdated. The advent of the state-sponsored "full-time amateur athlete" of the Eastern Bloc countries further eroded the ideology of the pure amateur, as it put the self-financed amateurs of the Western countries at a disadvantage.  Beginning in the 1970s, amateurism requirements were gradually phased out of the Olympic Charter. After the 1988 Games, the IOC decided to make all professional athletes eligible for the Olympics, subject to the approval of the IFs.
Near the end of the 1960s, the Canadian Amateur Hockey Association (CAHA) felt their amateur players could no longer be competitive against the Soviet team's full-time athletes and the other constantly improving European teams. They pushed for the ability to use players from professional leagues but met opposition from the IIHF and IOC. Avery Brundage , president of the IOC from 1952 to 1972, was opposed to the idea of amateur and professional players competing together. At the IIHF Congress in 1969, the IIHF decided to allow Canada to use nine non-NHL professional hockey players  at the 1970 World Championships in Montreal and Winnipeg , Manitoba , Canada.  The decision was reversed in January 1970 after Brundage said that ice hockey's status as an Olympic sport would be in jeopardy if the change was made.  In response, Canada withdrew from international ice hockey competition and officials stated that they would not return until "open competition" was instituted.   Günther Sabetzki became president of the IIHF in 1975 and helped to resolve the dispute with the CAHA. In 1976, the IIHF agreed to allow "open competition" between all players in the World Championships. However, NHL players were still not allowed to play in the Olympics until 1988, because of the IOC's amateur-only policy. 
Greece , Australia , France , and United Kingdom are the only countries to be represented at every Olympic Games since their inception in 1896. While countries sometimes miss an Olympics due to a lack of qualified athletes, some choose to boycott a celebration of the Games for various reasons. The Olympic Council of Ireland boycotted the 1936 Berlin Games , because the IOC insisted its team needed to be restricted to the Irish Free State rather than representing the entire island of Ireland. 
There were three boycotts of the 1956 Melbourne Olympics : the Netherlands , Spain , and Switzerland refused to attend because of the repression of the Hungarian uprising by the Soviet Union , but did send an equestrian delegation to Stockholm; Cambodia , Egypt , Iraq , and Lebanon boycotted the Games because of the Suez Crisis ; and China (the "People's Republic of China") boycotted the Games because Taiwan was allowed to compete in the Games as the "Republic of China". 
In 1972 and 1976 a large number of African countries threatened the IOC with a boycott to force them to ban South Africa and Rhodesia , because of their segregationist regimes. New Zealand was also one of the African boycott targets, because its national rugby union team had toured apartheid -ruled South Africa. The IOC conceded in the first two cases, but refused to ban New Zealand on the grounds that rugby was not an Olympic sport.  Fulfilling their threat, twenty African countries were joined by Guyana and Iraq in a withdrawal from the Montreal Games, after a few of their athletes had already competed.  
Taiwan also decided to boycott these Games because the People's Republic of China (PRC) exerted pressure on the Montreal organising committee to keep the delegation from the Republic of China (ROC) from competing under that name. The ROC refused a proposed compromise that would have still allowed them to use the ROC flag and anthem as long as the name was changed.  Taiwan did not participate again until 1984, when it returned under the name of Chinese Taipei and with a special flag and anthem. 
In 1980 and 1984, the Cold War opponents boycotted each other's Games. The United States and sixty-four other countries boycotted the Moscow Olympics in 1980 because of the Soviet invasion of Afghanistan . This boycott reduced the number of nations participating to 81, the lowest number since 1956.  The Soviet Union and 15 other nations countered by boycotting the Los Angeles Olympics of 1984 , contending that they could not guarantee the safety of their athletes. Although a boycott led by the Soviet Union depleted the field in certain sports, 140 National Olympic Committees took part, which was a record at the time. The fact that Romania, a Warsaw Pact country, opted to compete despite Soviet demands led to a warm reception of the Romanian team by the United States. When the Romanian athletes entered during the opening ceremonies, they received a standing ovation from the spectators, which comprised mostly U.S. citizens. The boycotting nations of the Eastern Bloc staged their own alternate event, the Friendship Games , in July and August.  
There had been growing calls for boycotts of Chinese goods and the 2008 Olympics in Beijing in protest of China's human rights record , and in response to Tibetan disturbances . Ultimately, no nation supported a boycott.   In August 2008, the government of Georgia called for a boycott of the 2014 Winter Olympics , set to be held in Sochi , Russia, in response to Russia's participation in the 2008 South Ossetia war .  
The Olympic Games have been used as a platform to promote political ideologies almost from its inception. Nazi Germany wished to portray the National Socialist Party as benevolent and peace-loving when they hosted the 1936 Games , though they used the Games to display Aryan superiority. Germany was the most successful nation at the Games, which did much to support their allegations of Aryan supremacy, but notable victories by African American Jesse Owens , who won four gold medals, and Hungarian Jew Ibolya Csák , blunted the message. The Soviet Union did not participate until the 1952 Summer Olympics in Helsinki. Instead, starting in 1928, the Soviets organised an international sports event called Spartakiads . During the interwar period of the 1920s and 1930s, communist and socialist organisations in several countries, including the United States, attempted to counter what they called the "bourgeois" Olympics with the Workers Olympics . It was not until the 1956 Summer Games that the Soviets emerged as a sporting superpower and, in doing so, took full advantage of the publicity that came with winning at the Olympics. 
Individual athletes have also used the Olympic stage to promote their own political agenda. At the 1968 Summer Olympics in Mexico City, two American track and field athletes, Tommie Smith and John Carlos , who finished first and third in the 200 metres, performed the Black Power salute on the victory stand. The second-place finisher, Peter Norman of Australia, wore an Olympic Project for Human Rights badge in support of Smith and Carlos. In response to the protest, IOC president Avery Brundage told the United States Olympic Committee (USOC) to either send the two athletes home or withdraw the track and field team. The USOC opted for the former.  During the same Olympics, Czechoslovakian gymnast Věra Čáslavská announced her protest to the Soviet-led invasion of her home country after controversially receiving Silver on the Beam and a shared Gold on the Floor . During the Soviet anthem, Čáslavská turned her head down and to the right of the Soviet flag in order to make a statement over the invasion and the Soviet influence of the sport of Gymnastics . Returning home, Čáslavská was made an outcast by the Soviet government and was banned from competition and travelling.
Currently, the government of Iran has taken steps to avoid any competition between its athletes and those from Israel. An Iranian judoka , Arash Miresmaeili , did not compete in a match against an Israeli during the 2004 Summer Olympics . Although he was officially disqualified for being overweight, Miresmaeli was awarded US$125,000 in prize money by the Iranian government, an amount paid to all Iranian gold medal winners. He was officially cleared of intentionally avoiding the bout, but his receipt of the prize money raised suspicion. 
Use of performance-enhancing drugs
In the early 20th century, many Olympic athletes began using drugs to improve their athletic abilities. For example, in 1904, Thomas Hicks , a gold medallist in the marathon, was given strychnine by his coach.  The only Olympic death linked to performance enhancing occurred at the 1960 Rome games. A Danish cyclist, Knud Enemark Jensen , fell from his bicycle and later died. A coroner's inquiry found that he was under the influence of amphetamines .  By the mid-1960s, sports federations started to ban the use of performance-enhancing drugs; in 1967 the IOC followed suit. 
According to British journalist Andrew Jennings , a KGB colonel stated that the agency's officers had posed as anti-doping authorities from the International Olympic Committee to undermine doping tests and that Soviet athletes were "rescued with [these] tremendous efforts".  On the topic of the 1980 Summer Olympics , a 1989 Australian study said "There is hardly a medal winner at the Moscow Games, certainly not a gold medal winner, who is not on one sort of drug or another: usually several kinds. The Moscow Games might as well have been called the Chemists' Games." 
Documents obtained in 2016 revealed the Soviet Union's plans for a statewide doping system in track and field in preparation for the 1984 Summer Olympics in Los Angeles. Dated prior to the country's decision to boycott the Games, the document detailed the existing steroids operations of the program, along with suggestions for further enhancements.  The communication, directed to the Soviet Union's head of track and field, was prepared by Dr. Sergei Portugalov of the Institute for Physical Culture. Portugalov was also one of the main figures involved in the implementation of the Russian doping program prior to the 2016 Summer Olympics. 
The first Olympic athlete to test positive for the use of performance-enhancing drugs was Hans-Gunnar Liljenwall , a Swedish pentathlete at the 1968 Summer Olympics , who lost his bronze medal for alcohol use. One of the most publicised doping-related disqualifications occurred after the 1988 Summer Olympics where Canadian sprinter, Ben Johnson (who won the 100-metre dash ) tested positive for stanozolol . His gold medal was later stripped and awarded to the American runner-up Carl Lewis , who himself had tested positive for banned substances prior to the Olympics. 
In 1999 the IOC formed the World Anti-Doping Agency (WADA) in an effort to systematise the research and detection of performance-enhancing drugs. There was a sharp increase in positive drug tests at the 2000 Summer Olympics and 2002 Winter Olympics . Several medallists in weightlifting and cross-country skiing were disqualified because of doping offences. During the 2006 Winter Olympics, only one athlete failed a drug test and had a medal revoked. The IOC-established drug testing regimen (now known as the Olympic Standard) has set the worldwide benchmark that other sporting federations attempt to emulate.  During the Beijing games, 3,667 athletes were tested by the IOC under the auspices of the World Anti-Doping Agency. Both urine and blood tests were used to detect banned substances. Several athletes were barred from competition by their National Olympic Committees prior to the Games; only three athletes failed drug tests while in competition in Beijing.   In London over 6,000 Olympic and Paralympic athletes were tested. Prior to the Games 107 athletes tested positive for banned substances and were not allowed to compete.   During and after the Games eight athletes tested positive for a banned substance and were suspended, including shot putter Nadzeya Ostapchuk , who was stripped of her gold medal. 
Russian doping scandal
Women were first allowed to compete at the 1900 Summer Olympics in Paris, but at the 1992 Summer Olympics 35 countries were still fielding all-male delegations. This number dropped rapidly over the following years. In 2000, Bahrain sent two women competitors for the first time: Fatema Hameed Gerashi and Mariam Mohamed Hadi Al Hilli .  In 2004, Robina Muqimyar and Fariba Rezayee became the first women to compete for Afghanistan at the Olympics .  In 2008, the United Arab Emirates sent female athletes ( Maitha Al Maktoum competed in taekwondo, and Latifa Al Maktoum in equestrian) to the Olympic Games for the first time. Both athletes were from Dubai's ruling family . 
By 2010, only three countries had never sent female athletes to the Games: Brunei , Saudi Arabia , and Qatar . Brunei had taken part in only three celebrations of the Games, sending a single athlete on each occasion, but Saudi Arabia and Qatar had been competing regularly with all-male teams. In 2010, the International Olympic Committee announced it would "press" these countries to enable and facilitate the participation of women for the 2012 Summer Olympics . Anita DeFrantz , chair of the IOC's Women and Sports Commission, suggested that countries be barred if they prevented women from competing. Shortly thereafter, the Qatar Olympic Committee announced that it "hoped to send up to four female athletes in shooting and fencing " to the 2012 Summer Games in London.
In 2008, Ali Al-Ahmed , director of the Institute for Gulf Affairs , likewise called for Saudi Arabia to be barred from the Games, describing its ban on women athletes as a violation of the International Olympic Committee charter. He noted: "For the last 15 years, many international nongovernmental organisations worldwide have been trying to lobby the IOC for better enforcement of its own laws banning gender discrimination. ... While their efforts did result in increasing numbers of women Olympians, the IOC has been reluctant to take a strong position and threaten the discriminating countries with suspension or expulsion." In July 2010, The Independent reported: "Pressure is growing on the International Olympic Committee to kick out Saudi Arabia, who are likely to be the only major nation not to include women in their Olympic team for 2012. ... Should Saudi Arabia ... send a male-only team to London, we understand they will face protests from equal rights and women's groups which threaten to disrupt the Games".
At the 2012 Olympic Games in London , Great Britain , for the first time in Olympic history, every country competing included female athletes.  Saudi Arabia included two female athletes in its delegation; Qatar, four; and Brunei, one ( Maziah Mahusin , in the 400m hurdles). Qatar made one of its first female Olympians, Bahiya al-Hamad (shooting), its flagbearer at the 2012 Games,  and runner Maryam Yusuf Jamal of Bahrain became the first Gulf female athlete to win a medal when she won a bronze for her showing in the 1500 m race . 
The only sport on the Olympic programme that features men and women competing together is the equestrian disciplines. There is no "Women's Eventing", or 'Men's Dressage'. As of 2008, there were still more medal events for men than women. With the addition of women's boxing to the programme in the 2012 Summer Olympics , however, female athletes were able to compete in all the same sports as men.  In the winter Olympics, women are still unable to compete in the Nordic Combined . There are currently two Olympic events in which male athletes may not compete: synchronised swimming and rhythmic gymnastics .
Terrorism and violence
Three Olympiads had to pass without a celebration of the Games because of war: the 1916 Games were cancelled because of World War I , and the summer and winter games of 1940 and 1944 were cancelled because of World War II. The Russo-Georgian War between Georgia and Russia erupted on the opening day of the 2008 Summer Olympics in Beijing. Both President Bush and Prime Minister Putin were attending the Olympics at that time and spoke together about the conflict at a luncheon hosted by Chinese president Hu Jintao .  When Nino Salukvadze of Georgia won the bronze medal in the 10 metre air pistol competition, she stood on the medal podium with Natalia Paderina , a Russian shooter who had won the silver. In what became a much-publicised event from the Beijing Games, Salukvadze and Paderina embraced on the podium after the ceremony had ended. 
Terrorism most directly affected the Olympic Games in 1972. When the Summer Games were held in Munich , Germany, eleven members of the Israeli Olympic team were taken hostage by the Palestinian terrorist group Black September in what is now known as the Munich massacre . The terrorists killed two of the athletes soon after they had taken them hostage and killed the other nine during a failed liberation attempt. A German police officer and five terrorists also perished. 
Terrorism affected the last two Olympic Games held in the United States. During the Summer Olympics in 1996 in Atlanta, Georgia , a bomb was detonated at the Centennial Olympic Park , which killed two and injured 111 others. The bomb was set by Eric Rudolph , an American domestic terrorist , who is currently serving a life sentence for the bombing.  The 2002 Winter Olympics in Salt Lake City, Utah , took place just five months after the September 11 attacks , which meant a higher level of security than ever before provided for an Olympic Games. The opening ceremonies of the Games featured symbols of the day's events . They included the flag that flew at Ground Zero , NYPD officer Daniel Rodríguez singing " God Bless America ", and honour guards of NYPD and FDNY members. The events of that day have made security at the Olympic Games an increasing concern for Olympic planners. 
The Olympic Games have been criticised as upholding (and in some cases increasing) the colonial policies and practices of some host nations and cities either in the name of the Olympics by associated parties or directly by official Olympic bodies, such as the International Olympic Committee, host organising committees and official sponsors. Critics have argued that the Olympics have engaged in or caused erroneous anthropological and colonial knowledge production, erasure, commodification and appropriation of indigenous ceremonies and symbolism, theft and inappropriate display of indigenous objects, further encroachment on and support of the theft of indigenous lands, and neglect and/or intensification of poor social conditions for indigenous peoples. Such practices have been observed at the 1904 Summer Olympics in St. Louis, Missouri ; the 1976 Summer Olympics in Montreal, Quebec ; the 1988 Winter Olympics in Calgary, Alberta ; and the 2010 Winter Olympics in Vancouver, British Columbia .
IOC rules for citizenship
The Olympic Charter requires that an athlete be a national of the country for which they compete. Dual nationals may compete for either country, as long as three years have passed since the competitor competed for the former country. However, if the NOCs and IF involved agree, then the IOC Executive Board may reduce or cancel this period.  This waiting period exists only for athletes who previously competed for one nation and want to compete for another. If an athlete gains a new or second nationality, then they do not need to wait any designated amount of time before participating for the new or second nation. The IOC is only concerned with issues of citizenship and nationality after individual nations have granted citizenship to athletes.
Reasons for changing citizenship
Athletes will sometimes become citizens of a different nation so they are able to compete in the Olympics. This is often because they are drawn to sponsorships or training facilities in such places as the United States. It could also be because an athlete is unable to qualify from within their original country. The athlete may not qualify because there are already qualified athletes in the athlete's home country. Between 1992 and 2008, about fifty athletes emigrated to the United States to compete on the US Olympic team after having previously competed for another nation. 
Citizenship changes and disputes
One of the most famous cases of changing nationality for the Olympics was Zola Budd , a South African runner who emigrated to the United Kingdom because there was an apartheid-era ban on the Olympics in South Africa. Budd was eligible for British citizenship because her grandfather was born in Britain, but British citizens accused the government of expediting the citizenship process for her. 
Other notable examples include Kenyan runner Bernard Lagat , who became a United States citizen in May 2004. The Kenyan constitution requires that one renounce their Kenyan citizenship when they become a citizen of another nation. Lagat competed for Kenya in the 2004 Athens Olympics even though he had already become a United States citizen. According to Kenya, he was no longer a Kenyan citizen, jeopardising his silver medal. Lagat said he started the citizenship process in late 2003 and did not expect to become an American citizen until after the Athens games. 
Basketball player Becky Hammon was not being considered for the United States Olympic team but wanted to play in an Olympic Games, so she emigrated to Russia, where she already played in a domestic league during the WNBA offseason. Hammon received criticism from some Americans, including the US national team coach, even being called unpatriotic. 
Champions and medallists
The athletes or teams who place first, second, or third in each event receive medals. The winners receive gold medals, which were solid gold until 1912, then made of gilded silver and now gold-plated silver. Every gold medal however must contain at least six grams of pure gold.  The runners-up receive silver medals and the third-place athletes are awarded bronze medals. In events contested by a single-elimination tournament (most notably boxing), third place might not be determined and both semifinal losers receive bronze medals. At the 1896 Olympics only the first two received a medal; silver for first and bronze for second. The current three-medal format was introduced at the 1904 Olympics .  From 1948 onward athletes placing fourth, fifth, and sixth have received certificates, which became officially known as victory diplomas; in 1984 victory diplomas for seventh- and eighth-place finishers were added. At the 2004 Summer Olympics in Athens, the gold, silver, and bronze medal winners were also given olive wreaths.  The IOC does not keep statistics of medals won, but National Olympic Committees and the media record medal statistics as a measure of success. 
Nations at the Summer Olympics
As of the 2012 Games in London, all of the current 204 NOCs have participated in at least one edition of the Olympic Summer Olympics, and athletes from Australia , France , Great Britain , Greece , and Switzerland have competed in all twenty-seven Summer Olympic Games . The United States has only missed the 1980 games due to a boycott led by American president Jimmy Carter.
Nations at the Winter Olympics
119 NOCs (110 of the current 204 NOCs and 9 obsolete NOCs) have participated in at least one Winter Games, and twelve nations ( Austria , Canada , Finland , France , Great Britain , Hungary , Italy , Norway , Poland , Sweden , Switzerland , and the United States ) have participated in all twenty-two Winter Games to date. Including continuity from Czechoslovakia , the Czech Republic and Slovakia have also been represented in every edition.
Host nations and cities
The host city for an Olympic Games is usually chosen seven to eight years ahead of their celebration.  The process of selection is carried out in two phases that span a two-year period. The prospective host city applies to its country's National Olympic Committee; if more than one city from the same country submits a proposal to its NOC, the national committee typically holds an internal selection, since only one city per NOC can be presented to the International Olympic Committee for consideration. Once the deadline for submission of proposals by the NOCs is reached, the first phase (Application) begins with the applicant cities asked to complete a questionnaire regarding several key criteria related to the organisation of the Olympic Games.  In this form, the applicants must give assurances that they will comply with the Olympic Charter and with any other regulations established by the IOC Executive Committee.  The evaluation of the filled questionnaires by a specialised group provides the IOC with an overview of each applicant's project and their potential to host the Games. On the basis of this technical evaluation, the IOC Executive Board selects the applicants that will proceed to the candidature stage. 
Once the candidate cities are selected, they must submit to the IOC a bigger and more detailed presentation of their project as part of a candidature file. Each city is thoroughly analysed by an evaluation commission. This commission will also visit the candidate cities, interviewing local officials and inspecting prospective venue sites, and submit a report on its findings one month prior to the IOC's final decision. During the interview process the candidate city must also guarantee that it will be able to fund the Games.  After the work of the evaluation commission, a list of candidates is presented to the General Session of the IOC, which must assemble in a country that does not have a candidate city in the running. The IOC members gathered in the Session have the final vote on the host city. Once elected, the host city bid committee (together with the NOC of the respective country) signs a Host City Contract with the IOC, officially becoming an Olympic host nation and host city. 
By 2016, the Olympic Games will have been hosted by 44 cities in 23 countries, but by cities outside Europe and North America on only eight occasions. Since the 1988 Summer Olympics in Seoul, South Korea, the Olympics have been held in Asia or Oceania four times, a sharp increase compared to the previous 92 years of modern Olympic history. The 2016 Games in Rio de Janeiro were the first Olympics for a South American country. No bids from countries in Africa have succeeded.
The United States has hosted eight Olympic Games, four Summer and four Winter, more than any other nation. The British capital London holds the distinction of hosting three Olympic Games, all Summer, more than any other city. The other nations hosting the Summer Games twice are Germany, Australia, France and Greece. The other cities hosting the Summer Games twice are Los Angeles, Paris and Athens. With the 2020 Summer Olympic Games, Japan and Tokyo, respectively, will hold these statuses.
In addition to the United States, nations hosting multiple Winter Games are France with three, while Switzerland, Austria, Norway, Japan, Canada and Italy have hosted twice. Among host cities, Lake Placid , Innsbruck and St. Moritz have played host to the Winter Olympic Games more than once, each holding that honour twice. The most recent Winter Games were held in Sochi in 2014, Russia 's first Winter Olympics and second Olympics overall.