Law homework help. Discuss the events that drew the United States into World War I. To what extent did ethnicity play a role in Americas neutrality from1914-1917? How significant was Americas contribution to the war effort? Elaborate. Class, we have to go back a bit and get the back story because America entering any global war was a strange thing for such an isolationist country as America. The key event that changed the nature of the game for the US was the Spanish-American War. Let’s get some thoughts on that. Guys, why was America involved in Cuba?