NFL franchise moves and mergers
Throughout the years, a number of teams in the National Football
League (NFL) have either moved or merged.

In the early years, the NFL was not stable and teams moved frequently
to survive, or were folded only to be resurrected in a different city
with the same players and owners. The Great Depression era saw the
movement of most surviving small-town NFL teams to the large cities to
ensure survival. Franchise mergers were popular during World War II in
response to the scarcity of players. Few of these relocations and
mergers were accompanied with widespread controversy.