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.
World War 2
cause they wanted to! =)