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Archduke Francis Ferdinand was assassinated along side his wife at Sarajevo.
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Austria declared war on Serbia.
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Germany declared war on Russia.
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Britain declared war on Germany.
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America declared war on Germany.
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The Treaty of Brest-Litovsk was signed between Russia and Germany.
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Turkey made peace.
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Austria made peace.
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Germany signed an armistice with the Allies.
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The Treaty of Versailles was signed by the Germans.