Karađorđević dynasty
In 1918, Serbia became part of the newly formed Kingdom of Serbs, Croats and Slovenes. Later that state changed name in the Kingdom of Yugoslavia (i.e. Kingdom of South Slavs) in 1929. During that interwar period the country was a parliamentary monarchy (except during the period of royal dictatorship 1929–1931), ruled by the Karađorđević dynasty.