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https://youtu.be/OfO7TduevHA

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The plan was to avoid a two front wart against france and russia. Under the plan , Germany first had to defeat France quickly. Then it would fight russia. The plan required German armies to march through belgium because they wanted to swing south of france's lines

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In Berlin, Kaiser William was horrified at the assassination. He wrote to Francis Joseph, advising him to take a stand toward Serbia. Meanwhile Serbia sought help of Russia. Russia began to prepare its military for war. Germany responded with declaring war with Russia. Russia appealed to ally France. In France nationalist saw a chance to avenge France's defeat in the Franco Prussian war. When Germany demanded that France to stay out of the conflict, France refused. Germany then declared war on France.

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An ultimatum is final set of demands. Serbia must end all anti-Austrian agitation and punish any serbian offical involved in the murder plot. It must even let Austria join in on the investigation. Serbia agreed to most but not all of the terms of Austria's Ultimatum

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On June 28 1914 he and his wife, Sophie , rode through Sarajevo in  an open car. Stationed along the route were several black hand conspirators. As the cars passed , one of the conspirators hurled a bomb. It missed the archduke but injured an officer in another car. Gavrio Princip was still waiting. As the car set out , princip sprang forward and fired twice into the back seat.

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News of royal visit angered many Serbian nationalists. they viewed Austrians as foreign oppressors. The date that was chosen for archduke's visit was a special date in Serbian history. Some members of Unity or Death, a Serbian terrorist group mostly known as the Black Hand. they vowed to assassinate Archduke.