- 
  
  Franz Ferdinand is assassinated by Serbia extremists
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  Austria-Hungary declares war on Serbia.
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  Germany declares war on Russia
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  Germany declares war on France and invades Belgium .
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  First British troops land in France.
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  Great Britain and France declare war on Austria-Hungary.
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  Japan declares war on Germany.
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  Austria tries to invade Serbia for the third time.
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  Germany declares waters to be war zones.
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  The Armenian Genocide where 1.5 million Armenians are killed in the ottoman empire.
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  Italy joins the war after signing the Treaty of London.
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  German U-boat sinks British passenger Lusitania.
