Fall Of Communism In Bulgaria By supraskater12345 Nov 9, 1989 The Berlin Wall falls. Period: Nov 9, 1989 to Aug 1, 1990 Fall Of Bulgarian Communism Nov 10, 1989 Todor Zhivkov voted out of office by Politburo Dec 7, 1989 Union of Democratic Forces Founded Jan 1, 1990 Multi Party System Introduced in Bulgaria Apr 3, 1990 Petar Mladenov elected into office Jul 6, 1990 Mladenov resigns Aug 1, 1990 Zhelyu Zhelev elected into office