Answer:
The answer is: the Sumerian Empire
Explanation:
The Sumerians organized the first civilization in southern Mesopotamia around the year 3500 BC. They developed cuneiform writing and techniques for storing and transporting water. They rose cities like Ur, Lagash, and Nippur, which lived in constant conflict. The political weakening of the Sumerians, due to the disunity of their cities and the absence of an administrative unit, allowed Semitic peoples from the north to invade the region.
