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Archduke Franz Ferdinand of Austria gets assassinated by serbian nationlist group (The Black Hand)
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Austria blame Serbia for the assassination of Archduke Franz Ferdidnad
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Germnay urge Austria to declare war on Serbia
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Serbia Mobilizes
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Austria invades Serbia
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British Fleet goes to its war stations in the North Sea
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Russia mobilizes
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Austria mobilizes
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Germany declares war on Russia. It also begins to move its army towards France and Belgium
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France mobilizes
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Germany inavade Luxembourg
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Germany declares war on France
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Britain warns Germany not to violate Belgian neutrality
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Germany invades Belgium
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Britain declares war on Germany