The Black Sea Cossack Host (Russian: Черномо́рское каза́чье во́йско; Ukrainian: Чорномо́рське коза́цьке ві́йсько), also known as Chernomoriya (Russian: Черномо́рия, lit. 'Black Sea region'), was a Cossack host of the Russian Empire created in 1787 in southern Ukraine from former Zaporozhian Cossacks. In the 1790s, the host was re-settled to the Kuban River. It comprised the Caucasus Fortified Defence Line from the mouth of the Kuban River to the mouth of the Bolshaya Laba River.
Krasnodar, formerly Yekaterinodar (until 1920), is the largest city and the administrative centre of Krasnodar Krai, Russia. The city stands on the Kuban River in southern Russia, with a population of 1,154,885 residents, and up to 1.263 million residents in the Urban Okrug. In the past decade Krasnodar has experienced rapid population growth, rising to become the tenth-largest city in Russia, and the largest city in southern Russia, as well as the Southern Federal District.
The city originated in 1793 as a fortress built by the Cossacks, and became a trading center for southern Russia. The city sustained heavy damage in World War II but was rebuilt and renovated after the war. Krasnodar is a major economic hub in southern Russia; In 2012, Forbes named Krasnodar the best city for business in Russia. Krasnodar is home to numerous sights, including the Krasnodar Stadium. Its main airport is Krasnodar International Airport.