World War 2
depends on who us is
no but they just call it that because of the many countriesw involved. (brazil wasn't really involved in world war 2. neither was madagascar.)
Germany declared war on the US. The US entered World War 2 because of the Pearl Harbor raid.
It didn't enter the war.
He was in World War 2 from the very beginning!
It didn't. Sweden was neutral during World War 2.
At the start of the War they were always in
yes it was vital 4 the US 2 enter World War 2 because we needed their help 2 win the war. It turns out tht because of them we won the war.