“…Brown, P. (1978:100) demonstrates that the variables influencing population distribution and settlement are terrain, technology, land quality, community organization and intercommunity relations. Population increase, agricultural intensification and expansion have been based on successful sweet potato cultivation between 1700m and 2200m, the malaria and frost limits (Brown, P. 1978:204), and the shift from hunting to pig herding (Morren 1977). Brown, P. (1978: 30) concludes that the densely settled, larger and more complex cultural and social forms of Highland peoples developed from a Highland fringe base and points out that it is debatable whether a larger population would be supportable in this [Highland fringe] ecological and subsistence system where high rainfall, poor soils, and difficult terrain greatly limit the arable land (Brown 1978:35).…”