Assassination of Archduke Franz Ferdinand of Austria (1914) Assassination of Archduke Franz Ferdinand of Austria The 28 June 1914 killing of Archduke Franz Ferdinand and his wife Sophie in Sarajevo by Gavrilo Princip; the act touched off the July Crisis and precipitated the First World War.
Balkan Wars (1912–1913) Balkan Wars Two consecutive conflicts in 1912–1913 on the Balkan Peninsula that reshaped regional boundaries, weakened Ottoman rule in Europe, and helped set the stage for World War I.
