world war 1

world war 1 cause

Jun 28, 1914

Archduke Ferdinand is assassinated

ottoman empire declares war

Aug 2, 1914

ottoman empire declares war on the allies

germany declares war

Aug 3, 1914

germany declares war on france and russia

U.S. declares war

Jan 31, 1917

united states enters the war

treaty of versailles ended

Jun 28, 1919

treaty of versailles is signed ending world war 1