At first America saw it as a problem for Europe to handle on its own and did not think it would travel over the Atlantic Ocean
The US entered the war for a variety of reasons
Self defense, the US was attacked.
The US was attacked.
yes
It was their unwillingness to join the fight and ideals of staying neutral and separate.
yes
US got in the war because of the bombing in pearl harbor.
The US wasn't attacked (yet).
One of the main reasons that Us joined the war was due to there cruse ship being shot down by some of German submarines
sinking of Lusitania
The Japanese bombed Pearl Harbor
One reaon was Pearl Harbor.