Population density videographic of African countries

The World Bank 's latest World Development Report

In many African countries an increase in the size of the urban population has not necessarily been associated with growth. Excluding the extreme case of Liberia (which had a civil war during the period in question), several of Africa’s largest countries, notably Nigeria, saw a big increase in what seem like relatively unproductive slums, and those countries that are following the Asian example (Kenya, Ghana and Ethiopia) are doing so modestly and tentatively. The report examines the role of job creation in development, and suggests that while policies to encourage jobs and to encourage growth are similar, they are not identical. Growth policies do not always pay enough attention to female or youth employment, or to the multiple problems that self-employed people have in increasing skills or improving their businesses.

To learn more on this topic click the link ; World Development Report above. 
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Marsha Anderson