Zimmerman note By erhodes32 Period: Jan 1, 1914 to Jan 2, 1914 Archduke Ferdinand assassinated Period: Jan 1, 1914 to Jan 2, 1914 Central powers formed Period: Jan 1, 1914 to Jan 2, 1914 two trenches built across europe Period: Jul 1, 1914 to Jul 2, 1914 austria-hungary declares war on serbia Period: Aug 1, 1914 to Aug 2, 1914 germany declares war on russia Period: Aug 4, 1914 to Aug 5, 1914 germany ivades belgium Period: Aug 6, 1914 to Aug 7, 1914 russia declares war on austria-hungary Period: May 7, 1915 to May 8, 1915 Sinking of Lusitania Period: Jan 1, 1916 to Jan 2, 1916 woodrow wilson re-elected Period: Feb 1, 1916 to Feb 2, 1916 battle of verdun Period: Jul 1, 1916 to Jul 2, 1916 first battle of somme Period: Jan 1, 1917 to Jan 2, 1917 Allies formed Period: Jan 1, 1917 to Jan 2, 1917 Espionage and sedition act passed Period: Jan 1, 1917 to Jan 2, 1917 communist revolution in russia Period: Apr 6, 1917 to Apr 7, 1917 us declares war on germany Period: Apr 16, 1917 to Apr 17, 1917 us declares war on central powers Period: May 18, 1917 to May 19, 1917 Selective service act Period: Jul 15, 1917 to Jul 16, 1917 war industries board formed Period: Dec 9, 1917 to Dec 10, 1917 Zimmerman note Period: Jan 1, 1918 to Jan 2, 1918 battle of argonne Period: Jan 1, 1918 to Jan 2, 1918 Austria-hungary surrenders to allies Period: Jun 1, 1918 to Jun 2, 1918 germans stopped at marne river Period: Jun 8, 1918 to Jun 9, 1918 Wilson 14 pt speech Period: Jul 15, 1918 to Jul 16, 1918 Second battle of marne Period: Nov 1, 1918 to Nov 2, 1918 Germany signs armistice Period: Jun 28, 1919 to Jun 29, 1919 treaty of versailles