Who was in charge of a mesopotamian city

The person who was in charge of a Mesopotamian city was the king.

Explanation:

Mesopotamia is the area located between the Euphrates and Tigris rivers. The ancient civilizations that originated and developed on the Mesopotamian plain between the two rivers are called the Mesopotamia civilization. Roughly located in today's Iraq, it dates from 4000 BC to the 2nd century BC and is the earliest civilization of mankind. Due to the flooding of these two rivers every year, the downstream soil is fertile, rich in organic matter and minerals, and the water and soil provide the necessities for growing food, which has become the foundation of civilization.  Every Mesopotamian city was ruled by a king, as they were city-states at first, that went into a territorial extension with the passage of time.