The first Super Bowl was played in 1966, as part of the merger agreement between the NFL and the AFL, although the two leagues would not officially merge until 1970. The first Super Bowl was played between the NFL champion Green Bay Packers and the AFL champion Kansas City Chiefs; the Packers won 35-10.
The Green Bay Packers would also go on to win Super Bowl II in 1967, and the Super Bowl trophy was officially renamed the Vince Lombardi Trophy in 1970, after the passing of legendary Packers coach Vince Lombardi. The New York Jets won Super Bowl III in 1969, led by quarterback Joe Namath, making them the first AFL team to win the game, providing their league (and eventually conference) legitimacy.
The 1970s gave rise to two legendary AFC franchises: the Pittsburgh Steelers and the Miami Dolphins. The Miami Dolphins completed the NFL's only true perfect season when they won the Super Bowl in 1972, while the Steelers would win four Super Bowls during the decade and become the first post-merger dynasty.
The NFC climbed back to the top in the 1980s and '90s, with the '80s most dominated by the San Francisco 49ers' multiple Super Bowls and the Chicago Bears' legendary 1985 season. The 1990s saw the re-emergence of the Dallas Cowboys with three Super Bowl wins, while the AFC's Buffalo Bills made it to the Super Bowl in four consecutive years, losing all four.