ado Chernozemski, member of the IMRO. Alexander was succeeded by his eleven-year-old son Peter II and a regency council headed by his cousin, Prince Paul. Prime Minister Dragiša Cvetković, negotiated a solution to the concerns of the Croatian populace with Vladko Maček. In August 1939 the Cvetković–Maček Agreement established an autonomous Banate of Croatia.
Second Yugoslavia
In 1941, in spite of attempts to remain neutral in the war, the Axis powers invaded Yugoslavia. Smaller parts of the territory of modern Serbia were divided between Hungary, Bulgaria, Independent Croatia and Italy (greater Albania and Montenegro), while the main part of Serbia was placed under German Military administration, with a Serbian puppet governments led by Milan Aćimović and Milan Nedić. The occupied territory was the scene of a civil war between royalist Chetniks commanded by Draža Mihailović and communist partisans commanded by Josip Broz Tito. Against these forces were arrayed Axis auxiliary units of the Serbian Volunteer Corps and the Serbian State Guard. After one year of occupation, around 16,000 Serbian Jews were murdered in the area, or around 90% of its pre-war Jewish population. Many concentration camps were established across the area. Banjica concentration camp was the biggest concentration camp for Jews, with primary victims being Serbian Jews, Roma, and Serb political prisoners. The Axis puppet state of the Independent State of Croatia committed large scale persecution and genocide of Serbs, Jews, and Roma. The estimate of the United States Holocaust Memorial Museum indicates that between 330,000 and 390,000 ethnic Serb residents of Croatia, Bosnia and parts of Serbia were murdered during the Ustaše genocide campaign; same figures are supported by the Jewish Virtual Library. reports that more than 500,000 Serbs were killed overall, whereas official Yugoslav sources used to estimate more than 700,000 victims, mostly Serbs. The Jasenovac
