9781422286838

Ancient Civilizations

13

Tourists walk through one of the main streets in Teotihuacán. The structure at the end of the avenue is the Pyramid of the Moon, which was built around A . D . 400.

centers. There even appear to have been apartment complexes. At its peak, 125,000 people lived in Teotihuacán. The members of this civilization had their own systems of writing and mathematics. Teotihuacán began to decline around A . D . 650 and was abandoned entirely by A . D . 750. Scholars are still not sure why the city was abandoned, although it appears that droughts and crop