World War I or the First World War, often abbreviated as WWI or WW1, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.

Why did ww1 end at 11am?

Germany was the last of the Central Powers to sue for peace. The Armistice with Germany was agreed to come into effect at 11am to allow time for the news to reach combatants. ... Pershing had to face a Congressional hearing to explain why there were so many deaths when the hour of the armistice was known in advance.

When did ww1 end exactly?

In 1918, the infusion of American troops and resources into the western front finally tipped the scale in the Allies' favor. Germany signed an armistice agreement with the Allies on November 11, 1918.