The response of the urban system of the American South and Southwest to the influx of migrants over the past three decades conforms to predictions of central place theory.This is called the ________ phenomenon.

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The Sunbelt phenomenon refers to the predicted pattern of migration and urban growth in the American South and Southwest, which conforms to central place theory. This theory predicts that larger cities will serve as central places, attracting people and businesses, while smaller surrounding cities will have more limited functions and services. This results in a rank-size reordering of the urban system, where the largest city is significantly larger than the second largest, which is significantly larger than the third largest, and so on. The hexagonal and central place phenomena are related to central place theory, but do not specifically refer to the migration and urban growth of the American South and Southwest.

The Response of the Urban System of the American South