-
June 1914
Archduke Franz Ferdinand of Austria was assassinated by a Serbian nationalist in Sarajevo, Bosnia. -
July 28, 1914
Austria Hungary declares war on Serbia. WWI has begun -
August 4, 1914
August 4, 1914, German troops under Erich Ludendorff crossed the border into Belgium, in violation of that country’s neutrality. -
September 6-9, 1914
The First Battle of Marne -
October 31, 1914
The First Battle of Ypres -
December 25, 1914
The famous Christmas Truce on the Western Front -
May 7, 1915
The sinking of the Lusitania by a German torpedo, killing 128 Americans. -
Period: to
February-December 1916
Battle of Verdun -
Period: to
July-November 1916
The Battle of the Somme -
March 1, 1917
The Zimmerman Telegram was sent from Germany to Mexico, but Americans intercepted it. This was the final straw. -
April 2, 1917
US joins Allies -
April 24, 1915-1917
The Armenian Genocide was the Ottoman's attempt to exterminate 1.5 million Armenians. -
March 3, 1918
The Brest Litovsk Treaty was signed between the Russians and the Germans, for Russian to leave the war. -
Nov 11, 1918
World War I ended in the defeat of the Central Powers in November 1918 -
June 28, 1919
The Allies and Germany sign the Treaty of Versailles
