Possibly Soccer, or at least that's the most well known one
The main sport in the United States is soccer.
The main sport in Israel is football. (soccer)
Soccer is the main sport. another popular sport is skiing
the Frenches main sport is soccer, the 2 is rugby, the 3 is handball, the last is basket ball
The main sport played in Vietnam is soccer.
Soccer is the main sport followed and played in Sudan