The International Basketball Federation was formed in 1932 by eight founding nations and originally only oversaw amateur players. Basketball was first included in the Olympic Games in 1936 and has been dominated by the United States team, though they lost in 1972 to the Soviet Union. The first FIBA World Championship was held in 1950 in Argentina. Basketball quickly spread to colleges in the late 1800s and became popular at the high school level in the early 1900s, especially in Indiana, Illinois, and Kentucky.