the previous Charlotte franchise, rather than an expansion team. American Basketball Association (ABA) There’s only one expansion team in the whole history of the ABA. 1972: San Diego Conquistadors National Football League (NFL) Only extant teams are listed. Two charter franchises, the Chicago Cardinals (later the St. Louis Cardinals, now the Arizona Cardinals) and Decatur Staleys (now the Chicago Bears), are still active. 1921: Green Bay Packers, previously an independent, join the league. 1925: New York Giants (replaced another team of the same name that left the league after one season in 1921) 1930: Portsmouth Spartans (now Detroit Lions), previously of the Ohio League, join the NFL. 1932: Boston Braves (now Washington Commanders) – replaced the 1931 Cleveland Indians, who in turn replaced the Orange/Newark Tornadoes, a 1929 expansion team that left the league in 1931. 1933: Philadelphia Eagles — replaced the Frankford Yellow Jackets, a 1924 expansion team that folded in 1931; Pittsburgh Pirates (now Pittsburgh Steelers), previously the Rooneys of the Western Pennsylvania Senior Independent Football Conference, join the league. 1937: Cleveland Rams (now Los Angeles Rams) join, having previously played in the 1936 American Football League. 1950: Three teams joined the NFL after a partial merger with the rival All-America Football Conference (AAFC), two of which survive: Cleveland Browns and San Francisco 49ers 1953: Baltimore Colts (second) (now Indianapolis Colts); not to be confused with the AAFC Baltimore Colts, who were the third AAFC team to join the NFL but folded in 1950. They replaced the position held by several franchises, dating back to another charter franchise, the Dayton Triangles. 1960: Dallas Cowboys 1961: Minnesota Vikings 1966: Atlanta Falcons 1967: New Orleans Saints 1970: Boston Patriots (now New England Patriots), Buffalo Bills, Cincinnati Bengals, Denver Broncos, Houston Oilers (now Tennessee Titans), Kansas City Chiefs, Miami Dolphins, New York Jets, Oakland Raiders (now Las Vegas Raiders), and San Diego Chargers (now Los Angeles Chargers) join NFL after merger with the 1960 American Football League (AFL). 1976: Seattle Seahawks; Tampa Bay Buccaneers 1995: Carolina Panthers; Jacksonville Jaguars 1996: Baltimore Ravens — The Cleveland Browns effectively relocate to Baltimore and become the Ravens, though the legacy of the Browns stays in Cleveland for a future revival of the franchise (see below). Hence the Baltimore Ravens are officially considered an expansion team that began play in the 1996 season. 1999: The Cleveland Browns are revived, hold an expansion draft, and receive