Gavrilo Princip - a member of the Young Bosnian movement killed Austrian Archduke Franz Ferdinand and his wife Sofia during their official visit to Sarajevo, on 28 June 1914. This event was the cause for the outbreak of the First World War, which took tens of millions of lives (the number of casualties is estimated at about 20 million).
One of the consequences of this world war was the disappearance of three great European monarchies from the historic stage: Austro-Hungarian, Russian and Ottoman empires. The Young Bosnian movement promoted pro- Yugoslav ideas; one of its members was the writer and 1961 Nobel Prize laureate, Ivo Andrić.