Question

Which helped convince the United States to enter World War I on the side of the Allies?

Question 6 options:

overthrow of the Russian tsar

unrestricted submarine warfare by Germany


assassination of Archduke Franz Ferdinand

Answer 1

Unrestricted submarine warfare by Germany

Step-by-step explanation:

Did you know that Germany sunk the ship with passengers called "The Lusitania"? Germans thought it might have been a allied ship carrying ammunition, and weapons. A total of 1,195 people we killed. Including 128 Americans.