Don Host Oblast was a province (oblast) of the Russian Empire which consisted of the territory of the Don Cossacks, coinciding approximately with present-day Rostov Oblast in Russia. Its administrative center was Cherkassk, and later Novocherkassk.
It comprised the areas where the Don Cossack Host settled in the Russian Empire. From 1786, the territory was officially named Don Host Land (Russian: Земля Войска Донского, romanized: Zemlya Voyska Donskogo), renamed Don Host Oblast in 1870.
Yekaterinoslav Governorate was an administrative-territorial unit (guberniya) of the Russian Empire, with its capital in Yekaterinoslav. Covering an area of 63,392 km (24,476 sq mi), and being composed of a inhabitant of 2,113,674 by the census of 1897, it bordered Poltava Governorate to the north, Don Host Oblast to the east, Sea of Azov to the southeast, Taurida Governorate to the south, and Kherson Governorate to the west, and covered the area of the Luhansk, Donetsk, Dnipropetrovsk, and Zaporizhzhia Oblasts of modern Ukraine.
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