Football was invented on November 6, 1869 by Walter Camp. NFL stands for National Football League, and there are currently 32 teams today.
Football is a contact sport. there is offense and defense. The offense is the team that is trying to score, and the defense is the team trying to defend the endzone. Once they quarterback gets the ball, they can either pass it to a receiver. If they hand it off the a runningback, the defense has to try and tackle him.