On 14 May 1928, the
All-Russian Central Executive Committee and
Government of the Russian Soviet Federative Socialist Republic passed a directive on the formation of the
Central Black Earth Oblast using the territory of the former Voronezh, Kursk, Oryol and
Tambov Governorate Governorates with its centre as the city of Voronezh. The composition of the Central Black Earth Oblast was determined on 16 July 1928, and its districts were founded on 30 July of the same year. Later, from 1929 to 1933, these districts were revised several times. On 3 June 1929, Voronezh, the centre of the region, was designated as an independent administrative unit directly subordinate to the regional
Congress of Soviets and its executive committee. On 16 September 1929, the Voronezh Okrug was abolished, and its territory became the Stary Oskol and Usman Okrugs. ==See also==