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Archduke Franz Ferdinand was assassinated in Sarajevo. He was killed by a 19 year old Bosnian Serb. His name was Gavrilo Princip and he was part of the group Young Bosnia.
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Austria-Hungary declares war on Serbia after the assassination of the Archduke. In response Russia mobilized troops to the Russia border. Russia was also Slavic. Germany had given Austria-Hungary pressure for quick action.
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Russia was mobilizing troops to the Australian border. Germany warned Russia to stop or they would declare war. Russia continued and Germany declared war.
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Germany had declared war on France a day before. They attacked neutral Belgium to get to France so they could start the Schlieffen Plan. In response to this, Britain declared war on Germany.
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The Battle of Verdun was a battle between the German and French armies. It is the longest and bloodiest battle of WWI. Their was about 40,000 French casualties and 350,000 German casualties. The battle lasted from February 21, 1916 to December 18, 1916.
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A German foreign minister named Arthur Zimmermann made a telegram that was planned to go the German minister in Mexico, von Eckhardt. Instead Britain got a hold of it and deciphered the telegram. Germany was planning on having Mexico join the war and offered them U.S. territory. This was one of the causes of the U.S. joining the war.
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The United States declared war on Germany after the U.S. Senate and the U.S. House of Representatives voted on it. President Woodrow Wilson had originally declared neutrality. Britain was a close trading partner of the U.S. and Germany had been trying to quarantine the British Isles.
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President Wilson delivers his speech Fourteen Points speech on January 8. It consists of fourteen strategies for national security and world peace. His ideas helped form the League of Nations. They however were unsuccessful.
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Russia signed the Treaty of Brest-Litvosk with the Central Powers, this ended Russia's participation in the war. Russia had been losing a lot of battles against Germany. This weakened Russia a lot and affected Russia's population with worry.
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World War I ended when the Treaty of Versailles was signed. Germany was forced with most of the blame. They had to pay for most of the damage because of the Dawes Plan and the Young Plan.
