Fall Final Project By reesegruver Jun 28, 1914 Archduke Franz Ferdinand Assassination This is what caused the start of World War 1. Austria-Hungary declares war on Serbia for killing the Archduke. ADD MORE!! Apr 6, 1917 America Joins The War America joins the Allied Powers due to the discovery of the Zimmerman Telegram. ADD MORE
This is what caused the start of World War 1. Austria-Hungary declares war on Serbia for killing the Archduke. ADD MORE!!