World War 1(WW1)

jUNE 28

Jun 28, 1914

Archduke Franz Ferdinand, prince to the Austria-Hungary throne, is assassinated in Sarajevo by a Serbian named Gavrilo Princip.

jULY 23

Jul 23, 1914

Austria-Hungary makes demands on Serbia for retribution. Serbia does not meet demands.

jULY 28

Jul 28, 1914

Austria-Hungary declares war on Serbia. Russia begins mobilizing its troops.