Which early urbanized area is commonly called the fertile crescent?
a. the nile river valley
b. the indus river valley
c. mesoamerica
d. mesopotamia

The correct answer is letter D.
Mesopotamia is known as the Fertile Crescent. It was a highly urbanized area that promoted agriculture, birth of civilizations, and the growth of trade. It is a very moist and fertile land that is located along Western Asia, Nile Valley, and the Nile Delta.

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