ABSTRACT
Regions in which the economy is largely a subsistence one have in the past coexisted with modern-sector regions for long periods, though changing slowly all the time. A true subsistence region in an economy presents all the problems of developing a technically primitive economy, and in the long run leaving it alone is not practicable. In the developing countries, mineral-producing regions are generally areas of relatively high income, often exporting substantial parts of their products abroad. Mineral-producing regions have more often presented problems for the exhaustion or the supersession on the market of their mineral products; they lose their chief means of livelihood. Manufacturing regions present a somewhat different set of problems when, for reasons of technology or markets, the growth of demand for labour in their industries falls. This state constitutes congestion in the most literal and general sense – pressure on the physical and administrative equipment.
