AIM 102 - How did the US enter WWI?

 I.  US Enters WW I 

A.  WWI changes when the US enters the war in 1917 because of two events

B.  Lusitania 

1. Americans were injured and killed when a submarine sunk a cruise ship that people were travelling on

C. Zimmerman Note

1. Germany sent a letter to Mexico asking Mexico to attack the US.  Germany did not want the US to fight against them in the war.

D. US enters on Allied Side