Teotihuacan
Origins and foundation

Other scholars have put forth the Totonac people as the founders of Teotihuacan and have suggested that Teotihuacan was a multi-ethnic state since they find diverse cultural aspects connected to the Zapotec, Mixtec, and Maya peoples. The builders of Teotihuacan took advantage of the geography in the Basin of Mexico. From the swampy ground, they constructed raised beds, called chinampas, creating high agricultural productivity despite old methods of cultivation. This allowed for the formation of channels, and subsequently canoe traffic, to transport food from farms around the city. The earliest buildings at Teotihuacan date to about 200 BCE. The largest pyramid, the Pyramid of the Sun, was completed by 100 CE.
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