NFL vs CFL
The first recorded game that resembles what is now called football in North America took place in the mid 1800s and pitted a Canadian team from McGill University in Montréal, Québec against players from Harvard University in Massachusetts, USA. Since that time, both countries have created professional football leagues. Though both the Canadian Football League (CFL) and National Football League (NFL) play a game based on the original game, there are slight variations in the way the game developed in each league. See how many of these differences you know.