wwI By shardae powell Jun 28, 1914 1914 Austrian Archduke Francis Ferdinand and wife assassinated in Sarajevo by Serbian nationalist, Gavrilo Princip Period: Jun 28, 1914 to Nov 11, 1918 wwI Feb 15, 1915 German submarine blockade of Great Britain begins Feb 18, 1916 Battle of Verdun—Germans and French each lose about 350,000 men Apr 27, 1917 usa delcare war on germany Feb 7, 1918 willson brought the 14 points to united states