The National Football League commonly known as NFL is the largest and longest long-term professional football league in the World. It is only played in the American soul. It was formed by eleven teams in 1920 as the American Professional Football Association (the league changed the name to the National Football League in 1922). The league currently consists of 32 teams from the USA. 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. The team that wins the the AFC championship faces the winner of the NFC championship in the Super Bowl at the end of each season.
In Usa College football was the bigger attraction, but by the end of World War II, pro football began to rival the college game for fans’ attention. Rule changes and innovations such as the T formation led to a faster-paced, higher-scoring game. The league also expanded out of its eastern and midwestern cradle; in 1945, the Cleveland Rams moved to Los Angeles, becoming the first big-league sports franchise on the West Coast (not counting the various teams in ice hockey’s PCHA, which was a rival to the NHL in the 1910s and 1920s). In 1950, the NFL accepted three teams from the defunct All-America Football Conference, expanding to thirteen clubs. In the 1950s, with the league broadcast on national television, pro football finally earned its place as a major sport.
NFLl has remained America’s favorite sport since 1965. In a Harris Poll conducted in 2008, the NFL was the favorite sport of as many people (30%) as the combined total of the next three professional sports–baseball (15%), auto racing (10%), and hockey (5%). Additionally, football’s American TV viewership ratings now surpass those of other sports. The NFL has the highest per-game attendance of any domestic professional sports league in the world, drawing over 67,000 spectators per game for each of its two most recently completed seasons. For more information see here