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The assassination of Archduke Franz was the spark for the outbreak of the war. This event led to many other events to cause the war. His death encouraged all European powers to defend their allies and want to expand their empires.

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The battle of Ypres had been the first battle to be fought during world war 1 and it was fought on the western front around Ypres. The battle was between German and allied armies.

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The RMS Lusitania was a British registered liner that was sinked by a german U-boat during world war 1. The sinking was a significant event because it caused international outrage and turned public opinion against Germany.

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The battle of Somme was one of the battles that were fought during world war 1. It was fought between armies of the british empire and the french third republic against the german empire. It took place on both upper reaches of the somme river in France.

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The Bolshevik Revolution was a political event that occurred in Russia, where the bolshevik party, later was known as the Communist Party, led to an uprising to overthrow the Russian Provisional Government and transfer power to the Soviets, which were council of workers, peasants, and soldiers.

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After many leading events pushing the US to join the war they finally joined on April 4,1917. The U.S. Senate voted in support of the measure to declare war on Germany. The House concurred two days later. The United States later declared war on German ally Austria-Hungary on December 7, 1917.

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The battle of Passchendaele July 31, 1917

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The battle of Passchendaele July 31, 1917

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The battle of Passchendaele was the 3rd battle of Ypre and it was a campaign for the First World War. The battle had been between the Allies and the German Empire. The battle took place in Passendale.

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The signing of the Armistice Nov 11, 1918

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The signing of the Armistice Nov 11, 1918

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The singing of the Armistice had been the first step towards ending ww1. After four years of fighting and many lost lives, the marshal of France, along with other Allies, and Germany signed an agreement to end the war.

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The Treaty of Versailles was the primary treaty produced by the Paris Peace Conference at the end of World War I. It was signed on June 28, 1919, by the Allied and associated powers and by Germany in the Hall of Mirrors in the Palace of Versailles and went into effect on January 10, 1920