In which century did American football originate?

Knodel1958, stop trying to gatekeep language; you're going to change nothing. Get used to the fact that different regions call different sports by the same name.

um it sounds like Rutgers and princeton were playing soccer

Over the past century, it has evolved into one of the most exciting sports to watch even though a typical game is only about 15 minutes of actual playing. The vast majority of the two to three hours is time running off between plays. If you care about the outcome, the drama can get pretty intense.

So does the modern version of gridiron football actually have its roots in Canada?

Is American football the most dangerous of the three to play?