Sh*t! Pearl Harbor has been bombed by the Japanese!
Pearl Harbor has been bombed! How dare they attack us while we're recovering from a Depression and are just minding our own business! We let them take over the east and didn't even bat an eyelash! We let Hitler, the angry mustache model, take over part of Europe! Why are they mad at us?!
"Let's go to war against Fascism!" the whole United States said at the same time, being pissed off about getting attacked.
*even though they had been neutral up till this point and had only just stopped supplying both sides with weapons and had focused their efforts on their allies. Also they didn't care/know that the Jews were dying and didn't do anything to stop it right away.
I am now declaring that we are in the war on Europe and we will be siding with the Allies! Screw you Germany! Get ready to meet your maker, Japan!
The US split troops between Europe and even though they didn't do so good at first, they eventually kicked the Axis's a$$ and kicked Hitler's fascism out of the countries he had invaded. They eventually found out about the Concentration camps (after turning away Jewish refugees because of some stupid quota) and liberated those who were alive.
As for Japan? Well, let's ask Hiroshima and Nagasaki how they think the war went. The US kicked some a$$ in the Pacific showdown, but they might have gone a step too far... some juries are still out on it, but not all. Let's just say Japan did meet their maker two times over for the crime of Pearl Harbor.