Final answer:
Most densely populated areas in South America are located along coastal regions and in urban core areas, influenced by colonial activity, global markets and technology, and the Southern Cone region is home to highly urbanized population and developed economies.
Step-by-step explanation:
Most of the densely populated areas in South America are located along the coastal regions and in the urban core areas. This pattern of urbanization can be attributed to colonial activity and influence, as well as the integration of metropolitan areas with global markets and technology. It is also important to note that the Southern Cone region in South America, which includes countries like Argentina, Chile, and Uruguay, has a high percentage of urbanized population and developed economies.