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The Arch-Duke Ferdinand and his wife is shot dead in their car in 1914.
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The Austrians immediately claim that it was the Serbians who trained the assassins
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Austria declares war on Serbia to try and crush them.
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The Russians prepare to defend Serbia because they are allies
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SInce the Germans are coming, the Frence prepare defences
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Germany orders Russia to stop helping Serbia because it is an ally of Austria
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Germany moves its troops through France and Belgium
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Britain threatens Germany because the invaded neutral land
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War between Germany and France breaks out
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Britain joins the war because of its oblications to their allies