High Quality Content by WIKIPEDIA articles! The People`s Democratic Republic of Ethiopia (PDRE) was the official name of Ethiopia from 1987 to 1991, as established by the Communist government of Mengistu Haile Mariam and the Workers` Party of Ethiopia (WPE). Its creation led to the dissolution of the Derg, the Communist military dictatorship formerly in charge of the country, and established a one-party state with the WPE as supreme authority, though several ex-Derg officials retained posts in the new government.