Three raw materials were essential to Iron Age peoples in South Central Africa: iron, copper and salt. This paper discusses some of the archaeological evidence for the development of regional and long-distance trade in these commodities during the earlier Iron Age. A distinction is drawn between regional trade in items for which there is local demand, and longer distance commerce in raw materials, which may have been conducted with the aid of some standardized units of monetary significance.The big question for future research is that of assessing the degree to which the more sophisticated centres of metallurgy and trade affected those societies, living outside the immediate area, whose technologies and economies were less highly developed.
