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Archduke Franz Ferdinand was assassinated on June 28, 1914 along with his wife during his visit to Sarajevo, Bosnia. Archduke Ferdinand was shot and killed when his car took a wrong turn.
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Austria-Hungary and Serbia Join the Great War
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Germany joined The Great War on August 4th, 1914. On this day Germany also declared war on Belgium.
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The Great War began on August 4th, 1914 when Germany invaded Belgium.
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On August 19, 1914, President Woodrow Wilson declared that the United States would remain neutral.
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On February 18th, 1915, Germany used submarines to blockade Great Britain.
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On March 28th, 1915, Germany sunk a British passenger ship that later lead to more conflict between powers.
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On May 7th, 1915, a German submarine sunk the Lusitania. The ship was carrying 1,198 people, 128 of them Americans.
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Bulgaria Joined The Great War on October 14th, 1915.
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British intercepted a message from Germany to Mexico. The message was proposing that if Mexico sided with Germany, Germany would return Mexico's lost land from the United States.
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On April 2nd, 1917, President Wilson discussed with outline his case for war with Congress.
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On April 16th, 1917, The United States joined The Great War and declared war on Germany.