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Great Britian declares war on Germany and Austrial- Hungary.
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As the royal entorage drove throug hthe city. Serbain nationalist Gavrillo Prinicip stepped from the crowd and shot the Archduke.
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Allies stop German advance on Paris.
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Germans use chemical weapons for the first time.
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the U-boat sank the British liner Lusitania of the southern coast of
Ireland. -
Disastrous British offensive.
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The United
States declares war on Germany. -
Allied victory costs over half a million casualties.
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The turning point of the war. Allies advance steadily after defeating the Germans.
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American advance helps end the war
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Established nine new nations including poland, czechoslovakia and the kingdom that later became Yugoslavia.
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French hold the line in longest battle of war.
