The U.S. entered World War II after the bombing of Pearl Harbor. Before that point in the war, the U.S. was practicing an isolationist philosophy, and just supporting the Allies through other means. However, once the U.S. was attacked, they entered the war and was a main reason why the war was won.
The Franco-Prussian War was not directly related to the entry of the US into World War I.
President Wilson was prompted by the refusal of Germany to halt its naval attacks.
do you mean what caused us entry into world war one? if so then the sinking of the USS Lusitania by German u-boats was what caused American entry into the war
the entry of US troops.
mr
5.5 Trillion Dollars
The Japanese sneak attack on Pearl Harbor propelled the US into the war.
The Germans' continued attacks on U.S. merchant vessels
nerd
Pearl Harbor. Once we declared war on Japan Germany delcared war on us. The game was on at that point.
the bombing of pearl harborthe bombing of pearl harbor!
yes