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archduke ferdinand assassinated
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july 28 1914 austria hungary declares war on serbia
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germany declared war on serbias allies
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ottoman declares war on the allies
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the attack on the lusitania
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when britain intercepted the zimmerman telegram
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america enters WWI
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russia leaves WWI
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president wilson issued his fourteen points
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germany agrees to stop fighting
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germany surrenders to avoid any more damage
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the treaty of Versailles was signed ending ww1
