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The event that was widely acknowledged to have sparked the outbreak of World War I occurred on June 28, 1914, when Archduke Franz Ferdinand, heir to the Austro-Hungarian Empire, was shot to death with his wife by the Bosnian Serb nationalist Gavrilo Princip in Sarajevo. Over the weeks that followed, Austria-Hungary blamed the Serbian government for the attack.
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This assurance came on July 5; Austria-Hungary subsequently sent an ultimatum to the Serbian government on July 23 and demanded its acceptance within two days at the risk of war
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germany declared war on russia
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grat britain declares war on germany
germany declared war on belgium
monte negro declared war on autria hungary
austria hungary declared war on russia
selvia declared war on germany
battle of the frontears
battle of mulhouse
grate britians and france declared war on austria hungary -
battles of morhange and sarrenbourg
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battle of gette
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battle of charleroi
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austria hungary declares war on belguim and the bettle of the ardennes
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battle of mons and japan declared war on germany
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battle of the meuse
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battle of the grand couronne
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battle of the asine
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battle of the arras
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battle of the messines
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battle of the langemark
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russia declares war on turkey
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battle of the nonneboschen
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german airship sighted off east coast of england
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first battle of champagne and british defence of givenchy