Answer:
Due to presence of industries.
Step-by-step explanation:
The economies of the cities are different from their surrounding rural areas because of the presence of the industries and opportunities of employment. There are more industries that gives high pay and wages to the labour and its staff as a result the economic conditions of the people gets better as compare to the people that lives in the rural areas surrounded the cities so we can conclude that the economies of the cities are different from their surrounding rural regions.