Answer :
Chain supermarkets and shopping mall stores encouraged people to move to urban areas.
What is an Urban area?
An urban area, or built-up area, can be classified as a human settlement with a high population density and infrastructure of a well-built environment.
In Urban areas, there are a lot of developed structures including big supermarkets and malls. This encouraged people to move to the Urban areas.
Learn more about Urban Areas here:
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