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June 28 1914
Assassination of Archduke Franz Ferdinand of Austria -
July 28 1914
Austria-Hungary declares war on Serbia -
August 1 1914
Germany declares war on Russia. France and Belgium begin full mobilization -
August 3 1914
Germany declares war on France, and invades neutral Belgium. Britain tells Germany to leave Belgium alone but rejects the request -
August 7 1914
The first British troops land in France. -
August 12 1914
Great Britain and France declare war on Austria-Hungary. Serbia is invaded by Austria-Hungary. -
August 23 1914
Japan declares war on Germany -
February 4th 1915
Kaiser Wilhelm announced Germany's intention to sink any and all ships sailing under the flags of Britain, Russia or France found within British waters -
April 24 1915
the Armenian genocide began. That day, the Turkish government arrested and executed several hundred Armenian intellectuals. After that, ordinary Armenians were turned out of their homes and sent on death marches through the Mesopotamian desert without food or wate -
April 26 1915
Italy signs the Treaty of London, committing itself to enter World War I on the side of the Allies. ... Under the terms of that agreement, however, Italy was only bound to defend its allies if one of them was attacked first -
may 7 1915
British ocean liner Lusitania is torpedoed without warning by a German submarine off the south coast of Ireland -
july 1 1916
thousands of British soldiers began an attack against a German trench line which was supposed to have been destroyed -
November 21,1916
The Kingdom of Poland was proclaimed by a joint act of the emperors of Germany and Austria-Hungary. Battle of Verdun – France gained all the ground lost to the Germans since February 24, allowing them to suspend military operations for a month to the soldiers to rest and be reequipped. -
January 9 1917
Battle of Rafa occurs near the Egyptian border with Palestine. -
March 3 1917
A mass protest by Russian civilians in Petrograd (St. Petersburg) erupts into a revolution against Czar Nicholas II and the war. Within days, Russian soldiers mutiny and join the revolution -
April 6 1917
United States formally declared war against Germany and entered the conflict in Europe -
june 25 1917
The first American troops land in France -
August 14 1917
China declares war on Germany and Austria-Hungary -
November 5,1917
The Bolsheviks organized an armed uprising in Petrograd to overthrow the Russian Provisional Government after eight months of rule:Vladimir Lenin distributed a proclamation by telegram throughout Russia informing citizens of the overthrow of the government -
January 8 1918
The Fourteen Points speech of President Woodrow Wilson was an address delivered before a joint meeting of Congress on January 8, 1918, during which Wilson outlined his vision for a stable, long-lasting peace in Europe, the Americas and the rest of the world following World War I.