What caused the United States to enter World War III on the side of the allies?
Germany is attack on Britain
Japan’s attack on Pearl Harbor, Hawaii
Germany’s invasion of Poland
Japan’s occupation of parts of China
1 answer
The United States entered World War II on the side of the Allies primarily due to Japan's attack on Pearl Harbor, Hawaii on December 7, 1941. This surprise attack led to the U.S. declaring war on Japan the following day. Additionally, Germany's invasion of Poland in September 1939 and subsequent aggression in Europe also played a significant role in the U.S. decision to enter the war to support the Allies.