The US entered World War II after the Japanese attacked Pearl Harbor December 7, 1941.
depends on who us is
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
Germany declared war on the US. The US entered World War 2 because of the Pearl Harbor raid.
08 Dec 1941
The us entered ww2 in 1941
1909 to 1944 The US entered World War 2 in December of 1941.
on decmber 8 1941
World War 2 : Japan.
Dec 07, 1941
the US got bombed by Japan
Japan attacked the US Fleet at Pearl Harbor.
No.The sinking of the Lusitania caused the US to enter WW1.
Because it didn't want to enter a European war
It didn't enter the war.
because they felt like it
The Attack on Pearl harbor