What two events triggered America to become involved in WWI?
A Zimmerman Telegram and the Assassination of Archduke Franz Ferdinand
B The Sinking of the Lusitania and the Assassination of Archduke Franz Ferdinand
C The Zimmerman Telegram and the Invasion of Belgium
D The Sinking of the Lusitania and the Zimmerman Telegram
The American public was outraged by the news of the Zimmerman telegram and it, along with Germany's resumption of submarine attacks, helped lead to the U.S. to join the war.