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Assassination of Archduke Francis Ferdinand
On June 28 1914, the heir to the Austrian throne, Archduke Francis Ferdinand was assassinatednby a Serbian in the Bosnian city of Sarajevo. -
Austria´s ultimatum to Serbia
The assasination of Francis Ferdinad caused a between Austria and Serbia, so Austria had an ultimatum to Serbia in July 23 1914. -
Austria declares war on Serbia
On July 28 1914, one month after Archduke Franz Ferdinand where killed Austria declared war on Serbia,that was the beginning of World War I. -
Russia mobilizes
On July 29 1914 Russia movilized to support Serbia. -
German ultimatum to Russia
On July 31 1914 Germany gave Russia an ultimatum that threatened mobilization if Russia did not rescind its mobilization orders within 12 hours. -
Germany declares war on Russia
Germany declared war on Russia on August 1 1914 because Russia didn’t respond. -
Germany declares war on France
On August 3 1914 Germany declared war on France because it was supported by Russia. -
Great Britain declares war on Germany
On August 4 1914 Great Britain declared war on Germany because it was supporting Belgium. -
Germany troops invade Belgium
On August 4 1914 German troops invaded Belgium because it was supported by France.
