Zimmerman note

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: Jan 1, 1914 to Jan 2, 1914

austria-hungary declares war on serbia

Period: Jul 1, 1914 to Jul 2, 1914

germany declares war on russia

Period: Aug 1, 1914 to Aug 2, 1914

germany ivades belgium

Period: Aug 4, 1914 to Aug 5, 1914

russia declares war on austria-hungary

Period: Aug 6, 1914 to Aug 7, 1914

Sinking of Lusitania

Period: May 7, 1915 to May 8, 1915

woodrow wilson re-elected

Period: Jan 1, 1916 to Jan 2, 1916

battle of verdun

Period: Feb 1, 1916 to Feb 2, 1916

first battle of somme

Period: Jul 1, 1916 to Jul 2, 1916

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: Jan 1, 1917 to Jan 2, 1917

us declares war on germany

Period: Apr 6, 1917 to Apr 7, 1917

us declares war on central powers

Period: Apr 16, 1917 to Apr 17, 1917

Selective service act

Period: May 18, 1917 to May 19, 1917

war industries board formed

Period: Jul 15, 1917 to Jul 16, 1917

Zimmerman note

Period: Dec 9, 1917 to Dec 10, 1917

battle of argonne

Period: Jan 1, 1918 to Jan 2, 1918

Austria-hungary surrenders to allies

Period: Jan 1, 1918 to Jan 2, 1918

germans stopped at marne river

Period: Jun 1, 1918 to Jun 2, 1918

Wilson 14 pt speech

Period: Jun 8, 1918 to Jun 9, 1918

Second battle of marne

Period: Jul 15, 1918 to Jul 16, 1918

Germany signs armistice

Period: Nov 1, 1918 to Nov 2, 1918

treaty of versailles

Period: Jun 28, 1919 to Jun 29, 1919