The three most popular College Sports in the US are Basketball, football and soccer. However there are others, swimming is very competitive, there are also rugby union, Lacrosse and volleyball. There are also relatively new sports that are popular, such as Ultimate Frisbee.
football
NCAA Basketball
American football (NFL)produces the most revenue in America.
pornography shooting...
My guess would be football..
G.A.A Gaelic sports.
I'd say google.
Sports are a great past-time for all people and tend to generate a lot of revenue. It is believed that baseball generates the most revenue amongst all other sports.
i don't know probably Nike or Adidas
soccer aka football(in Europe and the rest of the world)
prostitution
football is