Answer:
People migrate to the sunbelt in order to get better economic opportunities. The advance on air conditioning systems created more comfortable conditions for industries to locate there.
Explanation:
The Sunbelt is a region of the United States, it comprises the South and Southwest states, within the region desert/semidesert, tropical, humid subtropical, and Mediterranean climates can be found.
Since the 1950s the region´s population began to grow, the people wanted to move to warmer and sunny places. And as the industries move there too they created an economic opportunity for development.
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