Question

how were port towns formed ?

Answer 1

Answer:

as cities grew ports increasingly competed for land with industry, housing and other urban uses.

Answer 2

Answer:

Port cities are a staple of world history. They are hubs of world commerce and also of regional trade between coast and hinterland. ... Indigenous cultures often arise from sea entrepots (the Swahili ports of East Africa), are often transformed by them (British Calcutta) or end there (Powhattan's New York).