Andean and Chavín civilizations

Several people groups that lived in the Andean region in South America, such as the Chavín and the Caral or Norte Chico.

The Caral lived in what is now north-central coastal Peru, and lived around 3500-1700 BCE. They were a specialised and complex society, as their people had specialities.
Some argue that the Caral is the oldest civilisation in the Americas region, but others dispute it, saying that there is not enough evidence to support such claims. 

The Caral built large earthwork mounds with circular plazas sunken into the ground, their occupied area was around 150 acres of space.

The reason why they are called the Chavín is due to their largest temple, named Chavín de Huántar, which probably acted as a religious hierarchy.