Answer:
Monte Albán was the capital of Zapotec culture. It is located in the state of Oaxaca in Mexico. At its peak, between 500 AD and 750 AD, it was a city of an estimated 30,000 inhabitants.
The city was probably formed by three chieftains, who each had their own settlement in that area. Monte Albán is right in the middle of those three places and was clearly aimed at bringing the three chieftains under one political system of government.
The city grew around the central squares and administrative centers. The large central square was the center for the city. That square also grew, as did the buildings around it. The result was that the square was converted more and more densely, and that it was also more and more isolated from the rest of the city.