The National Basketball Association (NBA) is the USA's premier professional men's basketball league, comprised of 30 teams. It is an active member of USA Basketball (USAB), which is recognized by the International Basketball Federation as the National Governing Body (NGB) for basketball in the United States. The NBA is one of the four major North American professional sports leagues, which also includes the NHL, the NFL and MLB.
The league was founded in New York City, on June 6 1946 as the Basketball Association of America (BAA). The league adopted the name National Basketball Association in the autumn of 1949 after merging with the rival National Basketball League. The league's several international as well as individual team offices are directed out of its head offices located in the Olympic Tower at 645 Fifth Avenue in New York City. NBA Entertainment and NBA TV studios are directed out of offices located in Secaucus, New Jersey.
