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 oneBosnian Muslim) coordinated by Danilo Ilić. The political objective of the assassination was to break off Austria-Hungary’s south-Slavprovinces so they could be combined into a Yugoslavia. The assassins’ motives were consistent with the movement that later became known as Young Bosnia. The assassination led directly to the First World War when Austria-Hungary subsequently issued an ultimatum against Serbia, which was partially rejected. Austria-Hungary then declared war, marking the outbreak of the war. —Wikipedia