When the Mongolian Revolution of 1921 broke out, Mongolian revolutionaries expelled Russian White Guards (during the Russian Civil War of 1917–1923 following the Communist October Revolution of 1917) from Mongolia, with the assistance of the Soviet Red Army. The revolution also officially ended Manchurian sovereignty over Mongolia, which had existed since 1691. Although the theocratic Bogd Khanate of Mongolia still nominally continued, with successive series of violent struggles, Soviet influence got ever stronger, and after the death of the Bogd Khaan ("Great Khan", or "Emperor"), the Mongolian People's Republic was proclaimed on November 26, 1924. A nominally independent and sovereign country, it has been described as being a satellite state of the Soviet Union in the years from 1924 until 1990.