"There were several spots within different colonies which were sufficiently far removed from towns and colonial administration that they neither grew cash crops nor supplied labor. In southern Sudan, for instance, there were populations who continued to live a life not dissimilar to that which they had followed in previous centuries. Yet, even for such traditional African societies the scope for development no longer existed. They were isolated by the hold which the colonialists had on the rest of the continent. They could not interact with other parts of Africa. They were subject to increasing encroachment by the money economy and were more and more to be regarded as historical relics. The classic example of this type of obstructed historical development is to be found in the U.S.A., where the indigenous population of Indians who survived slaughter by the whites were placed in reservations and condemned to stagnation. in North America are living museums to be visited by white tourists who purchase curios."