The Cossacks are a group of martial people living in the southern steppe regions of Eastern Europe and Asia. The Don Cossacks, based around the Don River region and allied with Tsarist Russia, began a systematic conquest and colonization of lands to secure Russian borders on the Volga and the the whole of Siberia.
The Don Cossack Republic (Vsevelikoe Voisko Donskoe) was an anti-Bolshevik state formed during the Russian Civil War after the collapse of the Russian Empire. The independence was proclaimed by the assembly of Don Cossacks called the Krug on May 18, 1918. The Don Cossack Republic claimed the territory of the Don region and the city of Novocherkassk as its capital. During the dissolution of the USSR in 1991, the Don Cossack Republic was proclaimed as a subject of the Russian Federation with the capital in Novocherkassk.