Question: Which large pre-Columbian archaeological site is the major Zapotec regional center?
Sentence (from "Monte Albán"): The site is located on a low mountainous range rising above the plain in the central section of the Valley of Oaxaca where the latter's northern Etla, eastern Tlacolula, and southern Zimatlán & Ocotlán (or Valle Grande) branches meet.
Relevant evidence: No