Map of countries in Africa with background shading indicating approximate relative density of human populations (data from the Global Rural-Urban Mapping Project) Disclaimer: AAAS and EurekAlert!

These are South Africa, Egypt, Algeria, Nigeria and Ethiopia. These countries home 569 million people, amounting to 44 percent of the continent’s population which stands at 1.4 billion.

The Marketing Research Foundation (MRF) has released its latest Marketing All Product Survey (MAPS™) dataset, covering the ...