There are winter Olympics so people with winter sports interest can compete in the games. eg. Skiing, figure skating. Summer Olympics so people with summer sports can compete in the games. Gymnastics, swimming...ect.
The only sport the US does not compete in at any Summer Olympics (including 2008 and the upcoming 2012) is handball.
The Australian Olympic Committee sent a total of 410 athletes to the Games to compete in 23 sports.
Iceland is sending athletes to the 2008 Summer Olympics to compete in Athletics, Badminton, Handball, Judo, and Swimming.
Georgia is sending 35 athletes to compete in 10 sports at the 2008 Summer Olympics. The sports the Georgian athletes will compete in are Archery, Athletics, Swimming, Boxing, Gymnastics, Judo, Shooting, Volleyball, Weightlifting, and Wrestling.
The United States Olympic Committee sent a total of 539 athletes to the Olympics in London to compete in 25 sports. London Summer Olympics 2012
Mauritius competed in the following sports in the 2008 Olympics:400m DashArcheryBadmintonBoxingCyclingSwimmingWeightlifting
The Winter Olympics have competitions for sports that are considered 'cold weather sports' .... sports that can only be done on snow or ice. These sports include skiing, speed skating, and ski jumping. The Summer Olympics have competitions for sports that are considered 'warm weather sports'. These sports include athletics (track and field), marathon, and equestrian. There are Winter Olympics and Summer Olympics because you can play different sports in different seasons.
A total of 433 competitors competed for Australia at the 2008 Summer Olympics in Beijing. The team was Australia's second largest away team after the 2004 Summer Olympics in Athens, which included a team of 482 competitors. Australian athletes have competed in every Summer Olympic Games of the modern era. In addition to competitors, 418 officials and 38 medical personnel were part of the Australian team. Australia competed in 26 of the 28 Olympic program sports; they failed to qualify in Baseball and Team handball. Australia also sent a men's but not a women's football squad, and had two beach volleyball but no indoor volleyball teams competing.
The Australian Olympic Committee sent a total of 410 athletes to the Games to compete in 23 sports