Normally, each country decides for itself which sportsmen and –women are allowed to take part. Athletes must qualify for the games by winning or doing well in competitions before the Olympic Games start.

Athletes, who are sent to the games by their country must be a citizen of that country. For years, only amateurs were able to participate in the games, but today, most athletes are professionals, who earn their money through sport.

Most governments give their team money so that it can take part in the games.

US track team qualification for the 2016 Olympic Games
Image: jenaragon94 / CC BY