Question

How did the U.S. become involved in World War I?

Answer 1

Hiya!
The reason why the U.S became involved in WWI was due to the sinking of the British ship "Lusitania". It was sunk by a German u-boat, killing over 1000 people (some were American). This continued with German u-boats contining to sink American boats, Leading to the U.S becoming involved in WWI
Good-Luck! c:

Answer 2

Germany offered a deal with Mexico to invade U.S. which angered U.S and went to war with Germany. As well as Germany sinking U.S cargo ships that were going to Great Britain.