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The National Football League (NFL) is the largest Professional Football league in the United States. It is an unincorporated association controlled by its members.It was formed by eleven teams in 1920 as the American Professional Football Association (the league changed the name to American Professional Football League in 1921 and then settled on its current name in 1922). The league currently consists of thirty-two teams from American cities and regions. The league is divided evenly into two conferences - the American Football Conference (AFC) and National Football Conference (NFC), and each conference has four divisions that have 4 teams each. more and more people like NFL,many NFL fans like NFL Jerseys in all over the world.