Mongolian People's Republic
The Mongolian People's Republic (MPR) was the Mongolian communist state that existed from 1924 to 1992 that self-designated first as a people's democratic state and later as a socialist state. The Mongolian People's Revolutionary Party was enshrined as the leading force of state and society; it occupied the historical region of Outer Mongolia.
Source: Wikipedia — Mongolian People's Republic (CC BY-SA 4.0)