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19 year old Gavrilo Princip of the group called the Black Hand killed the Archduke on June 28, 1914. Both the Archduke and his wife were killed. This event is the real start to WW1.
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Austria blamed Serbia for the assassination of the Archduke and his wife and declared war against Serbia. Even though Russia was allied with Serbia, they wanted to help. Germany did not believe that they would come through and help out Serbia, but they did. Russia began mobilizing their troops to the Austria border.
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On August 1, 1914 Germany declared war against Russia. They did this because they saw what they did as a threat. Both France and Belgium helped Germany and began full mobilization.
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On August 3rd, 1914 Germany declared war against France. They also invaded Belgium. Germany also invented the Schlieffen Plan to help them out.
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On August 4, 1914 Britain declared war against Germany. Britain declared war because Belgium's ports were very close to the British coast. Both Belgium and Britain created a treaty to support each other of they were attacked.
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On May 23, 1915 Italy declared war against both Germany and Austria. Italy was on the side of Allied Powers. Germany and Austria were on the side of Central Sides.
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On April 6, 1917 the United States declared war against Germany. The United States brought a ship to Germany called the Lusitania, which was sunk by a German-U Boat. Three days later United States declared war.
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On January 4, 1919 there was a peace conference in Paris. It was also known as Versailles Peace Conference. This meeting was between the Allied Powers and the Central Powers to set peace.
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On November 11, 1918 Germany signed an armistice with the allies. They did this because they were no longer able to win the war. This date was the official end of WW1.
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On June 28, 1918 The Treaty of Versailles was signed by the Germans. The Treaty of Versailles was the most important of the peace treaties that brought WW1 to an end. The treaty ended the state of war between Germany and the Allied Powers.
