How were early americans able to grow crops in desert areas of the southwest?

Early Americans were able to grow crops in desert areas of the Southwest by using irrigation and dry farming methods.

Explanation:

In the earlier days of America, before colonization and settlements, the Native American tribes and communities that lived in the Southwest region used methods such as irrigation and dry farming in order to grow crops. The Southwest is mainly semi-arid and arid climate, with hot temperatures and low annual precipitations. Tribes located in what is now known as New Mexico and Arizona developed canal irrigation, seed selection, planting in different locations, maintaining separate plantings for different produce, and water harvesting, as some of the methods that allowed this communities to successfully grow crops in a not-perfect environment.

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