The National Football League (NFL) is a professional American football league consisting of 32 teams, divided equally between the National Football Conference (NFC) and the American Football Conference (AFC). The NFL generates revenue through various streams including television broadcasting rights, sponsorships, ticket sales, and merchandise. Founded in 1920 as the American Professional Football Association before renaming itself in 1922, the NFL has grown to become one of the most popular and lucrative sports leagues globally, known for its annual Super Bowl championship game.