Question

Why did the US enter WWll ?

Answer 1

Answer:

because of Pearl Harbor

Explanation:

the US was a neutral country during World War II until Japan bombed Pearl Harbor which caused the US to join.

Answer 2

The main reason was the attack on Pearl Harbor on December 7th, 1941. This surprise attack led to us declaring war on Japan. Germany (being an ally of Japan) declared war on us. So we subsequently declared war on them too.