The NBA, or National Basketball Association, is the premier professional basketball league in the United States and one of the most recognized sports leagues in the world. It was founded on June 6, 1946, in New York City as the Basketball Association of America (BAA). Three years later, in 1949, it merged with the rival National Basketball League (NBL) to form the NBA. The league started with just 17 teams, but many of those early franchises either folded or relocated, shaping the modern NBA structure over time.

In its early years, the NBA was dominated by teams like the Minneapolis Lakers, led by George Mikan, who was the league’s first true superstar. The 1960s saw the rise of the Boston Celtics dynasty, spearheaded by Bill Russell, who helped the team win 11 championships in 13 seasons. During this period, the Celtics' rivalry with the Philadelphia 76ers and players like Wilt Chamberlain added excitement and intensity to the league.

The 1970s were a time of change and experimentation. The NBA faced competition from the American Basketball Association (ABA), which introduced innovations like the three-point line and a flashier style of play. In 1976, the NBA and ABA merged, bringing new teams and players into the league, including future stars like Julius Erving.