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Assassination of Franz Ferdinand
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Germany issued Austria their full support, the blank - cheque (carte blanche)
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Austria - Hungary sends Serbia an Ultimatum
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Austria – Hungary declares war on Serbia
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Russia announces their full support of Serbia
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Germany orders mobilization and sends ultimatum to Russia
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German mobilization and declaration of war on Russia
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French mobilization against Germany
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Germany declares war on France
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Britain declares war on Germany
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Germany invades Belgium
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Austria and Russia declare war on each other