Archduke Francis Ferdinand, Crown Prince of Austria and his wife were assassinated at Sarajevo, touching off a conflict between the Austro-Hungarian government and Serbia that escalated into World War I. More
The Assassination of Archduke Franz Ferdinand, June 1914Archduke Ferdinand and his wife on an official visit to Sarajevo in June 1914, shortly before their assassination by Gavrilo Princip. Public Domain Photography via Wikimedia