People's Republic of Bulgaria
The People's Republic of Bulgaria (PRB; Bulgarian: Народна република България (НРБ) Narodna republika Balgariya (NRB)) was the official name of the Bulgarian socialist republic that existed from 1946 to 1990, when the Bulgarian Communist Party (BCP) ruled together with its allegedly independent coalition partner National Agrarian Party. Bulgaria was part of Comecon and an Eastern Bloc country, and a Soviet ally during the Cold War, a member of the Warsaw Pact.In 1989, democratic reforms were initiated after some few years period of unspoken liberalization and after in the autumn of 1989 the long ruling Todor Zhivkov was removed from power in a BCP congress. In 1990 BCP changed its name to Bulgarian Socialist Party (BSP) and adopted a centre-left political ideology due to Georgi Parvanov, then political historian at the BCP Institute, in place of Marxism-Leninism. Following first free elections since 1931 were held (won by the BSP), the country's name was changed to Republic of Bulgaria.