Most of the highways of south america are concentrated on the and connect

Most of the South American carriages are concentrated in rivers; ports with indigenous tribal areas and connect in groups of small cities. Thus the main and oldest roads of these regions were built, which go from that point to the other concentrated between rivers and plateaus by means of connections and other alternate routes.

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada