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Franz Ferdinand who was killed in Sarajevo and his wife Duchess Sophie was also killed by Bosnian Serb.
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Austria-Hungary seeks German support for a war against Serbia in case of Russian militarism. Germany gives positive support.
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The Serbian response is seen as unsatisfactory.
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Russia says mobilization is against Austria-Hungary only.
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Germany declares war on Russia.
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Germany declares war on France.
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The United Kingdom declares war on Germany soon after Germany invades Belgium.
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Montenegro declares war on Austria-Hungary.
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Austria-Hungary declares war on Russia and Serbia declares war on Germany.
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The Russian army enters East Prussia. For the Battle of Stalluponen.
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U.S. President Woodrow Wilson announces the U.S. will remain neutral.
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The Germans besiege and capture the Maubeuge Fortress.
