According to the developed by urban sociologists chauncey harris and edward ullman, cities do not have one center from which all growth radiates, but rather have numerous centers of development based on specific urban needs or activities.
a. the sector model
b. social area analysis
c. multiple nuclei model
d. sector model

Multiple Nuclei Model

Explanation:

According to my research on the different studies conducted by Chauncey Harris and Edward Ullman, I can say that the term developed being described by the information given in the question is called the Multiple Nuclei Model. This model explains that cities do not have a single nucleus but many separate nuclei each of which is its own growth point.

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industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.

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