The American Football League (AFL) was a professional football league that operated from 1960 to 1969. It was established to compete with the National Football League (NFL) and introduced several innovations, including the two-point conversion and a more exciting style of play. The AFL's success led to its merger with the NFL in 1970, significantly shaping the landscape of American football. The league featured teams like the New York Jets and the Kansas City Chiefs, which became household names. The AFL's legacy continues to influence the NFL today, as it helped to popularize the sport and expand its fan base across the United States.