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Germany forms the Triple Alliance with Austria and Italy.
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The Maxim Gun, which would be used during WW1, was patented by Hiram Maxim
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France forms the Triple Entenete with Great Britain and Russia
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Francis Ferdinand was the heir to Austria-Hungary. Himself and his pregnant wife were assasinated by The Black Hand, a Serbian nationalist group.
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Emperor Franz Joseph of Austria-Hungary declares war on Serbia.
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Germany declares war on Russia and 2 days lattter they declared war on France
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President Woodrow Wilson formally proclaims the neutrality of the United States
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Austria-Hungary declares war on Russia
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First battle in which aerial dogfight was used in the war.
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First battle of WW1
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Germany blockades Britain using submarines
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The British ship, the Lusitania, is torpedoed and sinks off the Irish coast; 1,198 passengers drown, including 114 Americans.
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William Jennings Bryan feels Woodrow Wilson will lead the country into war so he resignes.
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Longest battle in human history
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First time Mustard Gas is used in warfare
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Woodrow Wilson re-elected President of the United States with campaign slogan: "He kept us out of the war"
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Britain intercepts and translates German Foreign Secretary Zimmermann's telegram to Mexico urging its entry into war against the United States.
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Germany announces the renewal of unrestricted submarine warfare in the Atlantic
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Woodrow Wilson famous line in asking Congress to declare war.
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The US formally declares war on Germany and enters the conflict in Europe.