Question

Which event is considered a primary reason in the United States entered World War II

Answer 1

The primary reason for the United States entering World War II was the Japanese attack on Pearl Harbor.

Step-by-step explanation:

The primary reason the United States entered World War II was the Japanese attack on Pearl Harbor on December 7, 1941. This surprise attack by the Japanese military on the U.S. naval base in Hawaii prompted the U.S. to declare war on Japan the following day. Prior to this attack, the U.S. had adopted a policy of neutrality, but the attack on Pearl Harbor changed public opinion and led to the U.S. joining the war.

Learn more about United States entering World War II