The Beginning of NFL

It have been a long history of NFL games,do you know the original of it?
Let`s learn more about it.
The first league of professional football teams was the American Professional Football Association, formed in 1920. The admission fee was $100 per team. The teams pledged not to use any student player who still had college eligibility left, as the goodwill of the colleges was believed to be essential to the survival of the professional league. Thorpe, a player-coach for one of the teams, became president of the league during its first year,so NFL jerseys are of hot sale.
After World War II, college teams were allowed free substitution of players hat is, a player could enter and leave the game an unlimited number of times, as long as the ball was not in play during the substitution. This feature of the game led to the modern two-platoon system, in which one group of 11 players enters the game to play offense and a second group enters to play defense. The trend toward platoons crossed over to the professional game. Many cheap NFL jerseys are made. In 1946 the All-America Football Conference (AAFC) was established as a rival to the NFL.
The new league included the New York Yankees, the San Francisco 49ers, the Baltimore Colts (now Indianapolis Colts), and the Los Angeles Dons. The most powerful team in the new league was the Cleveland Browns, coached by football innovator Paul Brown. Although talented, the quarterbacks of the 1930s and early 1940s seldom completed more than 50 percent of their passes. A major cause of these low percentages was the primitive nature of pass-blocking strategies. With little protection, passers always had to throw while avoiding incoming rushers. Brown installed a blocking system that radically transformed the passing game. He changed the system by arranging the linemen in the form of a cup that pushed most pass-rushers to the outside and provided a safe area, called a pocket, from which the quarterback could pass. Using the strategy, Brown coached Cleveland to four AAFC championships from 1946 to 1949. In 1950 the Browns, 49ers, and Colts joined the NFL in a merger of the two leagues. The move ushered in a period of popularity and prosperity.
Throughout the 1950s and early 1960s players such as quarterbacks Norm Van Brocklin, Y. A. Tittle, and Johnny Unitas; receiver Tom Fears; running back Jim Brown; defensive back Tom Landry; linebacker Ray Nitschke; and all-around standout Frank Gifford ignited the league and attracted fans. During the period a select group of franchises won NFL championships, including Cleveland (1950, 1954, 1955), Detroit (1952, 1953, 1957), and Baltimore (1958, 1959). The advent of television helped to popularize the professional game when in 1956 the Columbia Broadcasting System (CBS) began to broadcast select games.