Final answer:
The first cities were established in Mesopotamia during the Neolithic Revolution, dependent on agriculture for growth.
Explanation:
Early cities developed in various regions, with the very first cities founded in Mesopotamia after the Neolithic Revolution, around 7500 BCE. These cities included Uruk, Ur, and Eridu. Agriculture was crucial for city development as it helped in preserving surplus production and creating economies of scale.
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