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the assassination of archduke franz ferdindand and his wife.
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austria-hungary declares war on serbia
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russia, france and britain, the triple entente declared war on the triple allience
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the first battle of marne.
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17-day battle near limanowa austria defeated the russians and drove them eastward.
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new zealang, british, australian, and french troops made repeated assults on the gallipoli peninsula which caused the gallipoli campaign.
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battle of verdun, german lunched a massive attack against the french near verdun.
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the beginning of the battle
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battle of somme, more than 20,000 british soldiers died
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the unrestricted submarine warfare is when germany's submarines sink the battle ships without warning.
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the zimmerman letter was sent but blocked by the allied powers and told america about it, they got offended and enertered the war
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communist leader vladimir ilych lenin siezed power on russia and insisted on ending his countries involement in the war
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the allies and germans clashed with the second battle of marne, with the aliied powers having 2 million more americans and 250 tanks; allies are gaining power.
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the new represenitive of the german government agreed on a armistice, or and agreement, to stop WWI
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the treaty of versaillis was signed and WWI was officially over