National Football League
Walter Chauncey Camp was an American football player, coach, and sports writer known as the "Father of American Football". Among a long list of inventions, he created the sport's line of scrimmage and the system of downs.
How its was invented
On September 17, 1920, a group of man gathered in Canton, Ohio at the Hupmobile showroom of Ralph Hay, owner of the hometown Bulldogs. The result of the meeting was the result of the national football league