World War I - Causes

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Archduke Franz Ferdinand Assassinated

June 28, 1914

Austrian ultimatum issued to Serbian Government

July 23, 1914

Austria-Hungary declares war on Serbia

July 28, 1914

Russia mobilizes against Austria and Germany

July 29, 1914

Germans demand Russian ceasefire and French intentions

July 31, 1914

Germany declares war on Russia

August 1, 1914

Germany Declares war on France

August 3, 1914