The Cambridge History of AfricaBy 1905 most of Africa had been subjected to European rule; in the 1940s, the colonial regimes faced widespread and mounting opposition. Yet the period surveyed in this volume was no mere interlude of enforced quiescence. The cash nexus expanded hugely, as Africans came to depend for access to household necessities upon the export overseas of primary products. The impact of white rule on African health and welfare was extremely uneven, and African