Yes
it was attacked by Germany in 1914
The United States planned to stay neutral after the war broke out. However, after the Germans attacked, they decided to join to get even.
England joined because Germany attacked Belgium
Yes
Japan attacked us at Pearl Harbor, Hawaii
April 6
April 6th, 1917
Roosevelt wanted to remain neutral. However, when Japan attacked Pearl Harbor, all that changed.
You have to wait a couple of years and then join in only when you're attacked by the Japanese
cause they wanted too
No. Canada joined the war at the same time as England.