Question

When did America join the first world war and why?​

Answer 1

Answer:

6 april 1917

under the command of major general john.

Answer 2

U.S. Entry into World War I, 1917. ... Wilson cited Germany's violation of its pledge to suspend unrestricted submarine warfare in the North Atlantic and the Mediterranean, as well as its attempts to entice Mexico into an alliance against the United States, as his reasons for declaring war.