-
Period: to
WWI Beginnings-U.S. Declaring War
-
Assassination of Archduke Franz Ferdinand
The heir to the Austria-Hungarian empire, Franz Ferdinand was assassinated in Sarajevo, Bosnia by members of the Serbian nationalist group, the Black Hand. -
Sinking of the Lusitania
Shortly after the beginning of the German u-boat warfare, the British ship the Lusitania was sunk, killing 1,100 people including 120 Americans -
U.S. Declares War on Germany
Following the Zimmermann Note and news of the German's resuming unrestricted submarine warfare, the United States formally declares war and joins WWI.