Sambo, U. , Adamu, U. , Sule, B. and Yahaya, M.A. 2020. Progressive and Retrogressive Phenomena of Economic Activity in Africa. Journal of Asian Multicultural Research for Economy and Management Study. 1, 2 (Nov. 2020), 7-18. DOI:https://doi.org/10.47616/jamrems.v1i2.42.