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Austria begins to declare a battle against the country of Serbia.
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The USA begins to use the Panama Canal for operation.
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A German submarine sinks a British ship called Lusitania
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The Germans attack French near Verdun, in which both sides lost more than 20,000 lives.
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President Woodrow Wilson declares war on Germany to join the allies.
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Commander Foch and Germany signs an armistice to end Central Powers.