Far Eastern Republic
The Far Eastern Republic, sometimes called the Chita Republic, was a nominally independent state that existed from April 1920 to November 1922 in the easternmost part of the Russian Far East and Transbaikal. Although nominally independent, it largely came under the control of the Russian Soviet Federative Socialist Republic (RSFSR), which envisaged it as a buffer state between the RSFSR and the territories occupied by Japan during the Russian Civil War of 1917–1922. The Far Eastern Republic came to an end in November 1922 when it voluntarily merged with the RSFSR, which became one of founding members of the Soviet Union the following month.