Identify the three distinct physical regions of south america where indigenous (native american) people settled' and one be of it for the people living in each region. explain easily

Some place of South America where indigenous people settled are Argentina, Bolivia, Chile, Ecuador, Brazil, Columbia, Guyana, Uruguay, Peru, Paraguay.

Explanation:

Indigenous mean originating at a particular place(native).  Mapuche, Toba, Kolla, Makovi, Huarpe are some indigenous people of Argentina. Aymara and Quechua are the largest indigenous group of Bolivia which is about 20% of total population. Native Peruvians are the indigenous group of Peru which is about 25% of total population according to the report in 2017.