Man has become the dominant species now in Africa as well as on the rest of the planet. This truism would scarcely need statement were it not a development of the last halfcentury, of the last quarter-century and even of the last decade. In Africa many races, nations and communities of men exist within the whole range from hunter and food gatherer to the urban dweller sealed off from nature by pavement, plumbing and prophylaxis. The rate of change is accelerating to such an extent that one cannot keep up to date with Africa.
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