The National Basketball Association traces its roots to 1946, when the Basketball Association of America (BAA) was formed to stage professional games in major arenas. In 1949, the BAA merged with its rival, the National Basketball League (NBL), creating the NBA.
The league began with 17 teams, but early financial challenges forced several to fold. By the 1950s, the NBA had stabilized, thanks in part to stars like George Mikan, who dominated with the Minneapolis Lakers and helped popularize the sport nationally.
In 1954, the introduction of the 24-second shot clock revolutionized the game, speeding up play and making basketball more exciting for fans. These foundational decades established the NBA as a viable professional league poised for growth.