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War involving nearly all the nations of the world
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Franz Ferdinand, Archduke of Austria and his Wife Sophie, Duchess of Hohenberg one hour before their deaths, June 28, 1914. The assassination was the spark that ignited the war.
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Germany told Americans to stay off British ships, and they could and would sink them.
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Germany announced "Unlimited Submarine Warfare" in the war zone.
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Russia left the war after its communist revolution in 1917
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New York Journal announcing the declaration of war the previous day.
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