WW1 begins (jun 28, 1914 – jul 28, 1914)
Description:
June 28, 1914 - Gavrilo Princip, who has ties to the Serbian terrorist-type group the Black Hand, assassinates Archduke Franz Ferdinand of Austria-Hungary. July 28, 1914 - Austria-Hungary declares war on Serbia. ... September 12, 1914 - First battle of the Aisne in France, begins, marking the beginning of trench warfare.
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