Trans-Caspian region, in the Central Asian possessions of Russia, is located east of the Caspian Sea and adjoins Persia and Afghanistan from the south, and Bukhara and Khiva from the east. It was formed in 1887. The history of the emergence and formation of the Trans-Caspian region is at the same time the history of the development of Russian dominance on the eastern coast of the Caspian Sea and the final placement of Russians in Central Asia.