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the assassination of Franz Ferdinand
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Austria declared war on Serbia
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Poison gas first used by Germans in attack on Canadians at Ypes, Belgium
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Sinking of the Lusitania
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German Zeppelins bombard suburbs of London
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The Allies started the evacuation of Gallipoli
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British forces surrendered to Turkish forces at Kut in Mesopotamia
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United States declared war on Germany
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American troops fire first shot in Trench Warfare
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Germany signed an armistice with the Allies – the official date of the end of World War One.