Assassination of Archduke Ferdinand becomes the prelude to World War I

28 June 2014

From Wikipedia:

On 28 June 1914, Archduke Franz Ferdinand of Austria, heir presumptive to the Austro-Hungarian throne, and his wife, Sophie, Duchess of Hohenberg, were shot dead in Sarajevo by Gavrilo Princip, one of a group of six assassins (five Serbs and one Bosnian Muslim) coordinated by Danilo Ilić. The political objective of the assassination was to break off Austria-Hungary’s south-Slav provinces so they could be combined […]