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| - This includes Denali, Tlingit, the Athabaskan tribes, the Apachean peoples (both Apache and Navajo Indians). 9000 BC Mexico, Guatemala, Nicaragua, El Salvador, Belize, Peru, Bolivia Development and farming of food staples: maize, potatoes, tomatoes, squash, peppers, many types of beans, and ullucos (leaf is similar to spinach and the root to potato).
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