According to recent UN projections more than 50 percent of the growth in world population over the next half century will be due to population growth in Africa. Given this, any policy that influences African demography will have a significant impact on the world distribution of income. In this note we discuss the potential for migration policies to affect fertility and education decisions, and hence, population growth in Africa. We present the results of different scenarios for more or less restrictive/selective migration policies and derive their implications for the future of world inequality.
Mountford, A. Rapoport, H. "Migration Policy, African Population Growth and Global Inequality" Ferdi Policy brief B105, October 2014 (also in IZA WP No. 8329, july 2014)