These days, the most famous and popular global events are sporting competitions, such as the Olympic Games and the football World Cup. In the events, people from all over the world compete against each other to win honours for themselves and their countries. Naturally, because these international competitions involve so many people, they are very large and complex events. This means that they are also very expensive to host. Despite this expense, however, a competition to host these events is very fierce, for various reasons.