THE relationship between urbanization and economic growth is one of the crucial issues of our time. New estimates from an important United Nations (UN) Population Division report show that Africa’s urban population is likely to treble in size, from 400-million to 1,3-billion, by 2050. This is by far the fastest urban growth rate in the world. It arises from a combination of natural growth (births exceeding deaths) and rural-urban migration.

African cities are expected to absorb 75% of the continent’s demographic expansion over the next few decades. Population growth is becoming a largely urban phenomenon.

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