Answer :
Final answer:
The westerlies are the wind belts responsible for the movement of the weather system from Dallas to St. Louis to Pittsburgh.
Explanation:
The wind belts responsible for the movement of this weather system from Dallas to St. Louis and then to Pittsburgh are the Westerlies.
The westerlies are prevailing winds located between approximately 30° and 60° north and south latitude. They move from west to east and have a significant impact on climate patterns in regions like the continental United States, Europe, and Canada.
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