Oasisamerica - Geography

Geography

The term "Oasisamerica" is derived from a combination of the terms "oasis" and "America". It refers to a wild land dominated by the Rocky Mountains and the Sierra Madre Occidental. To the east and west of these enormous mountain ranges stretch the grand arid plains of the Sonora, Chihuahua, and Arizona Deserts. At its height, Oasisamerica covered part of the present-day Mexican states of Chihuahua, Sonora and Baja California, as well as the U.S. states of Arizona, Utah, New Mexico, Colorado, Nevada, and California.

Despite being a basically dry land, Oasisamerica is scored by several bodies of running water like the Yaqui, Bravo, Colorado, and Gila Rivers. The presence of these rivers (and even some lakes that have since been swallowed by the desert), combined with a climate that was much milder that eastern Aridoamerica, allowed the development of agricultural techniques that were imported from Mesoamerica.

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