Which mechanism allowed pre-Columbian chinampa agriculture to support high population densities near Tenochtitlan?

💡 Explanation

In chinampas, nutrient-rich sediment was dredged regularly from canals, promoting nitrogen fixation from bacterial activity which replenished the raised beds. Therefore high soil fertility results, rather than increased rainfall, wind pollination, or drought resistance, which depend on different environmental factors or strategies.

• Which benefit resulted from the Aztec 'milpa' system's integration of maize with beans and squash?
• Which advantage was conferred by the intensive labor investment required cultivating chinampas in Aztec society?
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