What was the oldest known advanced civilization in the American continents?

The Caral-Supe civilization is the oldest known advanced civilization in the American continents discovered to date. Discovered only as recently as the 21st century, the villages of the Caral Supe were located along the coast of central Peru. Nearly 20 separate villages have been identified, with a central place at the urban community at Caral. The city of Caral included enormous earthen platform mounds, monuments so large that they were hidden in plain sight (thought to be low hills).

Caral is the largest recorded site in the Andean region with dates older than 2000 BCE and appears to be the model for the urban design adopted by Andean civilisations that rose and fell over the span of four millennia. It is believed that Caral may answer questions about the origins of the Andean civilisations and the development of the first cities.