After that, King abolished the Constitution and introduced personal dictatorship. He changed the name of the country to Kingdom of Yugoslavia and in 1931 he passed new Constitution. On October 9 1934, the King Alexander was shot in France.
In 1941 Axis powers invaded the state and divided it. In 1945, the Democratic Federal Yugoslavia came into being, covering the same teritory.
List of Kings:
- King Petar I (1 Dec 1918 - 16 Aug 1921)(Regent Prince Aleksandar ruled in the name of the King)
- King Aleksandar I (16 Aug 1921 - 9 Oct 1934)
- Regency headed by Prince Pavle (9 Oct 1934 - 27 Mar 1941)
- King Petar II (27 Mar 1941 - 29 Nov 1945) *exile from 13/14 Apr 1941
Internally, the Kingdom was divided into provinces from 1929, each of them called banovina. Their borders were intentionally drawn in such a way that they did not adhere to national borders and they were named after geographical features. The capital of the kingdom was Belgrade.
- Dravska banovina (Banovina of Drava), with its capital in Ljubljana
- Savska Banovina (Banovina of Sava), with its capital in Zagreb
- Vrbaska banovina (Banovina of Vrbas), with its capital in Banja Luka
- Primorska banovina (Seaside Banovina), with its capital in Split
- Drinska banovina (Banovina of Drina), with its capital in Sarajevo
- Zetska banovina (Banovina of Zeta), with its capital in Cetinje
- Dunavska banovina (Banovina of Danube), with its capital in Novi Sad
- Moravska banovina (Banovina of Morava), with its capital in Niš
- Vardarska banovina (Banovina of Vardar), with its capital in Skopje
- The City of Belgrade, together with Zemun and Pančevo was also an administrative unit