Gavrilo Princip

Gavrilo Princip was the man who assassinated Archduke Franz Ferdinand of Austria and his wife, Sophie, Duchess of Hohenberg, in Sarajevo on 28 June 1914. Princip and his accomplices were arrested and implicated a number of members of the Serbian military, leading Austria-Hungary to issue a démarche to Serbia known as the July Ultimatum. This was used as the motive for the First World War.