Supplying Allies with weapons
1941
they were a allie.
How_did_the_us_involvment_in_World_War_2_escolate
1945
The Japanesse surrender.
Self defense, the US was attacked.
December 7th 1941
Pearl Harbor
the japs bombed us
The US entered World War 2 after the attack on Pearl Harbor. When over 2,400 US lives were lost in a sneak attack on a Sunday morning, there was no stopping US involvement in the war.
From supplying the weapons of war to becoming the primary combatant.
The US fought Nazi Germany in Europe and Imperial Japan in the Pacific.