The Japanese attack of Pearl harbor
The U.S. was never unable to enter World War 2. It had the resources and manpower. The reason why the U.S. didn't enter the war at first is because they wanted to remain neutral rather than get involved in foreign affairs.
The reason the US entered war world 2 was that Japan had destroyed the USA's base at Pearl Harbor in Hawaii.
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.
Japan attacked Pearl Harbor on 12/6/41 and Adolph Hitler declared war on the US. That was plenty of reason to send troops to fight in World War 2.
World War 2
1941
1941
No
1941
pearl harbor
1909 to 1944 The US entered World War 2 in December of 1941.
The US was attacked.