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Serbian secret society "black hand"
Archduke Franz Ferdinand of Austria, heir to the Austro-Hungarian throne and his wife Sophie, Duchess of Hohenberg were assassinated in Sarajevo on 6/28/1914. -
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The United Kingdom declaration of war upon Germany
Occurred on 8/4/1914. The declaration was a result of German refusal to remove troops from neutral Belgium. -
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U-20 sank the Lusitania
The german submarine U-boat or U-20 for short, torpedoed and sank the Lusitania. It has 1,959 men, women, and children on board, 1,195 died, including 123 Americans. -
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President Woodrow Wilson defeated Charles E. Hughes
Democratic U.S. President Woodrow Wilson narrowly defeated Republican Charles E. Hughes in the U.S. presidential election. Republican Jeannette Rankin of Montana became the first woman elected to the United States House of Representatives. -
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British naval intelligence intercepted
British naval intelligence intercepted and decrypted a telegram sent by German Foreign Minister Arthur Zimmermann to the German Ambassador in Mexico City. -
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The United States declared war on the German Empire
Joining France, Great Britian, Russia, Canada, Australia, New Zealand, South Africa and Italy. They were arrayed against Germany, Austria-Hungary, the Ottoman Empire and Bulgaria. -
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First US troops arrive in France
The first 14,000 U.S. infantry troops landed in France at the port of Saint Nazaire. The landing site had been kept secret because of the menace of German submarines. -
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The Sedition Act of 1918
This act was enacted on May 16 1918 to extend the Espionage Act of 1917. The Sedition Act covered a broader range of offenses, notably speech and the expression of opinion that cast the government or the war effort in a negative light or interfered with the sale of government bonds. -
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World War 1 Ends
On November 11, 1918 an armistice was signed between the Germans and the Allies, ending World War I. -
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The Versailles Peace Treaty
was signed on June 28 1919 and officially ended World War 1.