In the Balkan Wars (1912–13), Serbia further expanded its borders to the south, taking control of much of present-day Kosovo and North Macedonia. Further territorial gains were made in the north (today's Vojvodina) and south-west (Sandžak region) in 1918, after World War I. Serbia became part of the new Kingdom of Serbs, Croats and Slovenes on December 1, 1918. Serbia proper did not had a separate political status within the Kingdom; in 1929, when new provinces of the Kingdom were formed, Serbia proper was divided between five "banovine", one of which (Morava Banovina) was established in the east with its capital in Niš.