WW1 By Mccubbpa Jan 1, 1900 founding the tripple alliance Mar 28, 1907 Founding of the truple entente Jun 28, 1914 assassination of archduke ferdinand Sep 12, 1914 1st battle of the marne May 7, 1915 sinking of the lusitania Feb 21, 1916 battle of verdun Mar 3, 1918 Treaty of brest-litovsk Jul 15, 1918 2nd battle of the Marne Nov 11, 1918 Armistice ends World War 1 Dec 8, 1941 USA declares war on germany