The American Football Conference (AFC) is one of two conferences within the National Football League, the National Football Conference (NFC) being the other. The AFC has its roots in the American Football League (AFL), which began to play in 1960. In 1970, the AFL merged with the NFL. As part of the merger, the former AFL teams, plus three former NFL teams (the Baltimore Colts, the Cleveland Browns and the Pittsburgh Steelers), were placed into the AFC. The remaining former NFL teams were placed in the NFC.