What caused america to enter the war? on which side did they enter.

    There were a few reasons for the entering of WW II, but the most well known is the bombing of Pearl Harbor on December 7, 1941. It was a peaceful early morning in Hawaii, when suddenly the buzz of bombers came through the air. Hundreds of Japanese plains bombed and crashes into the base causing chaos. This day caused a spread of fear throughout the America making them join the war.

Explanation:

answer; higher rate;

answer; mental health prevention programs;