to modern technologies in general. They were very quick to adopt one venerable Western innovation: the gun. They used this new and powerful tool to respond to market incentives: to capture and export slaves. There is no sign here that African values or culture prevented the adoption of new technologies and practices. As their contacts with Europeans deepened, the Kongolese adopted other Western practices: literacy, dress styles, and house designs. In the nineteenth century, many African societies also took advantage of the rising economic opportunities created by the Industrial Revolution by changing their production patterns. In West Africa there was rapid economic development based on the export of palm oil and ground nuts; throughout southern Africa, Africans developed exports to the rapidly expanding industrial and mining areas of the Rand in South Africa. Yet these promising economic experiments were obliterated not by African culture or the inability of ordinary Africans to act in their own self-interest, but first by European colonialism and then by postindependence African governments.