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Gavrilo Princip fired two shots at the heirs to the Austro-Hungarian Empire
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The Archduke and Archduchess of the Austro-Hungarian Empire visit Sarajevo
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Serbia agrees to two of the three terms of the ultimatum
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Austria-Hungary sends ultimatum to Serbia
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Austria-Hungary declares war on Serbia
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Germany orders France and Russia to stop mobilizing
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Period: to
France mobilizes to support its Russian ally
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Germany declares war on Russia
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Germany declares war on France
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Canada is automatically at war against Triple Alliance(
bing.com/search?q=n&form=EDGHPC&qs=PF&cvid=c1bcc100b37b404897d957eaea72c5f7&pq=n -
Germany begins the Schlieffen Plan and attacks France through neutral Belguim
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Britain declares war on Germany