World War I Begins

Date June - July 1914


  • Historic Event


  • The Genocide

Archduke Franz-Ferdinand of Austria, heir to the Austro-Hungarian throne, was assassinated by Yugoslav nationalist Gavrilo Princip in Sarajevo on June 28, 1914. A month later, Austria-Hungary declared war on Serbia. Russia mobilized troops in support of Serbia. The German Empire, Austria-Hungary’s key ally in the Central Powers, invaded Belgium and Luxembourg, and then France. This prompted England to enter the war.