Basketball was invented in December 1891 by the Canadian clergyman, educator, and physician James Naismith. Naismith introduced the game when we was an instructor at the Young Men's Christian Association Training School (now Springfield College) in Springfield, Massachusetts. At the request of his superior, Dr. Luther H. Gulick, he organized a vigorous recreation suitable for indoor winter play. The game involved elements of American football, soccer, and hockey, and the first ball used was a soccer ball. Teams had nine players, and the goals were wooden peach baskets affixed to the walls. By 1897-1898, teams of five became standard. The game rapidly spread nationwide and to Canada and other parts of the world, played by both women and men; it also became a popular informal outdoor game. U.S. servicemen in World War II (1939-1945) popularized the sport in many other countries.
A number of U.S. colleges adopted the game between about 1893 and 1895. In 1934 the first college games were staged in New York City's Madison Square Garden, and college basketball began to attract heightened interest. By the 1950s basketball had become a major college sport, thus paving the way for a growth of interest in professional basketball.
The first pro league, the National Basketball League, was formed in 1898 to protect players from exploitation and to promote a less rough game. This league only lasted five years before disbanding; its demise spawned a number of loosely organized leagues throughout the northeastern United States. One of the first and greatest pro teams was the Original Celtics, organized about 1915 in New York City. They played as many as 150 games a season and dominated basketball until 1936. The Harlem Globetrotters, founded in 1927, a notable exhibition team, specializes in amusing court antics and expert ball handling.
In 1949 two subsequent professional leagues, the National Basketball League (formed in 1937) and the Basketball