 The UMBC in due time, became the Third largest opposition party in the Northern Nigeria Assembly.In 1958, the UMBC entered into an alliance with the Southwest Nigeria dominant Action Group of Chief Obafemi Awolowo.Some of the early leaders of the UMBC were Joseph Tarka, David Lot, Patrick Dokotri, Edward Kundu Swem, Ahmadu Angara, Isaac Shaahu (Northern Assembly Opposition Leader), Solomon Lar, D. Bulus Biliyong, D.D.