The Green Bay Packers, everyone's favorite underdog team.
The Pittsburgh steelers i think
At The Moment The Most Popular Football Team In The World Is Manchester United
The Green Bay Packers is one of the most popular teams in American football.
football
arsenal
National Football Team of Bulgaria
Guatemala national football team
Manchester United have the largest fanbase in England and the world therefore being the most popular.
Soccer, Brazil's football team.
Michigan wolverines
Soccer / football in europe
Football (Soccer to Americans)