The National Basketball Association, commonly referred to as the NBA, is a professional men's basketball league of North America.It is comprise of thirty teams, one from Canada and 29 from the United States, the NBA is wide believed to be the first men's professional basketball league in the world.It is an progressive associate of USA Basketball (USAB), which is recognise by International Basketball Federation (FIBA) as the political unit deciding organic structure for court game in the United States. The NBA is one of the four major North American professional sports leagues, which include Major League Baseball (MLB), the National Football League (NFL), and the National Hockey League (NHL).

It was on June 6, 1946 that the league was started as the Basketball Association of America. In 1949, the BAA agreed to merge with the National Basketball League to become the National Basketball Association (NBA). At the start, there were seventeen franchises in the nation. However, in 1950 the franchises were consolidated to eleven. 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.In 1950, the NBA became integrated, accepting the first African American players.

The National Basketball Association has sporadically participated in international club competitions. The league played against the continental champions of the International Basketball Federation (FIBA) in the McDonald's Championship. This tournament was won by the NBA invitee every year it was held. ,Over years, the NBA has with pride showcased some of the maximal contestants in diversions history. From George Mikan to Magic Johnson, these are the contestants who have gone away a stable spectacular on the competition of basketball. Yearly the NBA contestants are acknowledged for superior time period public presentations by style of the NBA All Star game.