Answer: B.) the rise of a young all-powerful ruler
Step-by-step explanation:
Mesopotamia featured some of the earliest civilization of man owing to their advancements in Agriculture. With the wealth that came from Agriculture, city states were formed that then became empires that would vie for control.
A lot of the time, these empires were established due to the emergence of a young all-powerful ruler who would unite the empire by conquest. Some examples include Sargon of the Akkadian empire, Nebuchadnezzar of Babylonia and Darius the Great of Persia.