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The Balkan states of Bosnia and Herzegovina, had been annexed from Turkey and taken into the Austro-Hungarian Empire. This was strongly resented by many Serbs and Croats and a nationalist group, so they formed a group, "The Black Hand". Archduke Franz Ferdinand of Austria,decided to inspect Austro-Hungarian troops in Bosnia.So The Balck Hand sent an armed group of students to attempt an assasination. A Serbian student, Gavrilo Princip, had successfully assassinated the Archduke on June 28, 1914.
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The Austrian government blamed the Serbian government for the assassination of Franz Ferdinand, and declared war on Serbia. Russia was allied with Serbia, and Germany did not believe that she would mobilise and offered to support Austria if needed. However, Russia did mobilise and through their alliance with France, called on the French to mobilise also.
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Germany declared war on Russia on August 1, 1914, This is because Russia decided to mobilise and back Serbia.
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Germany declared war on France on August 3, 1914. German troops poured into Belgium as directed under the Schleiffen Plan, that was drawn up in 1905. The British foreign secretary, Sir Edward Grey, sent an ultimatum to Germany demanding their withdrawal from Belgium.
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When Germany did not withdraw troops from Belgium, Britian declared war on Germany on August 4, 1914.
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Japan decalres war on Germany, through their alliance with Great Britian,
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The Russian army marched into Prussia on the 26th of August, 1914. The Germans, used their railway system to surround the Russian Second army at Tannenberg before it's commander could realize what was happening. The on going battle was a major defeat for the Russians. Thousands of russian men died and 125,000 were taken prisoner.
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Turkey entered the war on the side of the central powers and helped a German naval bombardment of Russia.
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Since Turkey helped with the German attack on Russia, Russia declared war on Turkey on November 2, 1914.
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Britian and France declare war on Turkey, due to their alliances with Russia.
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Germany waged submarine warfare against the United Kingdom of Great Britain. The ship was identified and torpedoed by the German U-boat U-20 and sank in 18 minutes. This ship contained many American Passengers aboard.
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Italy entered the way on May 23, 1915. Italy joined the side of Allies.
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n Germany, orders were given to increase the U-boat campaign. All allied or neutral ships were to be sunk on sight and in just a month almost a million tons of shipping was sunk.
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Romania joined the war on the side of the Allies, but within a few months was occupied by the Germans and Austrians.
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The United States of America declares war on Germany in response to the sinking of ships by German U boats.
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On November 11, 1918 the Armistice was signed bringing the war to an end. (formal agreement of warring parties to stop fighting)
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The Treaty of Versailles was one of the peace treaties at the end of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June 1919. The Treaty of Versailles sent Germany into a depression and that depression is what eventually led to Hitlers uprising. Overall leading to WW2.
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The Great Depression was a severe worldwide economic depression. With the world at panic it gave people like hitler a niche to uprise, and overall create absolute chaos. Eventually leading to WW2 because of Hitlers dictatorship.