The economic history of developing countries, particularly the former colonies, has become polarized between two ideologies. The apologists for colonialism have emphasized the stimulus given to the indigenous economy by the introduction of foreign capital; the 'underdevelopment theorists' have turned this interpretation on its head and represented the relationship as being, particularly in 'settler colonies' such as Kenya and Zimbabwe, one not of stimulus but of rape and plunder. In this study, Dr Mosley considers the economies of colonial Kenya and Southern Rhodesia and argues, in the light of recently assembled statistical data, that the truth is more complex than either of these simple interpretations allows. At the level of policy, most white producers acknowledged that they could not afford to let 'white mate black in a very few moves': they needed his cheap labour, cattle and maize too much to wish to damage seriously the peasant economy that sustained them.