Austria languages. This meant in practice that the civil service would almost exclusively hire Czechs, because most middle-class Czechs spoke the German language, but not the other way around. The support of ultramontane Catholic politicians and clergy for this reform triggered the launch of the "Away from Rome" () movement, which was initiated by supporters of Schönerer and called on "German" Christians to leave the Roman Catholic Church. As the Second Constitutional Era began in the Ottoman Empire, Austria-Hungary took the opportunity to annex Bosnia and Herzegovina in 1908. The assassination of Archduke Franz Ferdinand in Sarajevo in 1914 by Bosnian
Serbs internationally until the Congress of Berlin in 1878. Serbia fought in the Balkan Wars of 1912–13, which forced the Ottomans out of the Balkans and doubled the territory and population of the Kingdom of Serbia. In 1914, a young Bosnian Serb student named Gavrilo Princip assassinated Archduke Franz Ferdinand of Austria, which directly contributed to the outbreak of World War I. In the fighting that ensued, Serbia was invaded by Austria-Hungary. Despite being outnumbered, the Serbs subsequently defeated the Austro-Hungarians at the Battle of Cer, which marked the first Allied victory over the Central Powers in the war. Further victories