Italy joins the competition in 2000 and it becomes the Six Nations. First members were Ireland, Scotland and Wales. England joins in 1890. Thus American football is born. Stagg came from Yale and brought along Camp's football rules.
American football spreads rapidly.
UofChicago is a founding member of what becomes the Big Ten conference. The Yale code quickly becomes dominant in most of the USA except on the West Coast where rugby survives. It survives enough to provide a team for the USA in the Olympics. 1924 - Rugby is played in the Olympics for the last time. USA wins its second consecutive gold medal in rugby by beating France 17-3 in front of a hostile crowd in Paris.