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Showing items 1 through 3 of 3.In the developed countries less than 20 per cent of the population is engaged in agriculture. The rest is employed in the industrial sector. In the underdeveloped countries less than 10 per cent of the population is employed in the industrial sector and the rest is engaged in agriculture.
L'urbanisation croissante, qui est due en parti a l'exode rural, est l'un des facteurs a l'origine de la répartition inégale de la population dans les pays africains.
Nesta edição, fiz alguns extensos acréscimos de informação histórica, resultantes da continuidade de minhas pesquisas sobre a sociedade que nascia no seio mesmo do escravismo.