-In most parts of the world, crowding people together allows businesses that wouldn’t otherwise exist to thrive...Africa is the only region where urbanisation is not correlated with poverty reduction.. What sets them apart from cities elsewhere is that urbanisation has not been driven by increasing agricultural productivity..African cities are centres of consumption, where the rents extracted from natural resources are spent by the rich. This means that they have grown while failing to install the infrastructure that makes cities elsewhere work.-
The Economist:Sept.16th.2016