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In 1882, Germany agreed to an alliance with Italy and Austria-Hungary. This was called the Triple Alliance and the Central Powers.
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World War 1
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Russia and France form an alliance using a secret treaty.
http://en.wikipedia.org/wiki/Franco-Russian_Alliance -
Britain and France signed an entente, forming an alliance between the two countries. Britain later formed a similar alliance with Russia, therefore forming The Triple Alliance.
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The archduke and his wife, Sophie, were assassinated by Gavrilo Princip in Serbia.
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Austria-Hungary declared war on Serbia because of the assassination of Archduke Francis Ferdinand and his wife.
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Britain declared war on Germany because Germany violated Belgium's wishes to be left out of the war by marching through their country.
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Germany used the zeppelins , which are large gas filled balloons, to bomb the English coast. http://en.wikipedia.org/wiki/German_strategic_bombing_during_World_War_I
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Italy joined the Allies and declared war on Austria-Hungary, even though before they were a neutral country.
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Britain intercepted a message from German foreign minister Arthur Simmerman to Mexico to join the Central Powers.
http://en.wikipedia.org/wiki/Zimmermann_Telegram -
Germany resumed submarine strikes bur agreed to give a warning to the ships.
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Russia went into a revolution that was coused by many bread riots in St. Petersburg started by the Russian people. This eventually brought down the monarchy.
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Wilson asked Congress to declare war against Germany. He said that this could be the "war to end all wars".
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President Wilson came up with a list of terms that would resolve World War One and all future wars.
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Germany first used poison gas to attack their enemies in their trenches. http://www.history.com/this-day-in-history/germans-introduce-poison-gas
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Kaiser William II stepped down from German rule and fled to exile in the Netherlands.
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The World War 1 ended when Germany sought an armistice.
