Why was the urban revolution essential in the development of civilizations? a. during the urban revolution, people used more land for agricultural purposes, which motivated them to turn to a hunter-gatherer lifestyle.
b. as people began to live among each other, many began to question the legitimacy of religion, which fell out of favor until the classical period.
c. the urban revolution led to the creation of law codes, which were the key factor in the development of civilizations.
d. the urban revolution required people to maintain and assure the survival of large populations, which led to a demand for more complex governmental systems.