Answer: Peru
Notes: Archaeologists discovered a sky-observation structure at Áspero, revealing early scientific practices. Áspero is a Late Preceramic site of the Norte Chico (Caral-Supe) civilization, one of the oldest in the Americas. It is located in Peru near the Supe River, close to the Pacific Ocean. It flourished during the Late Archaic period (before 3000 Before Christ (BC) to around 1800 BC). It was a major fishing, trade, and urban centre linked to Caral. The site has platform mounds and sunken plazas showing advanced planning.
