But Kis eventually revenged itself.
One of its rulers made himself master of Nippur, and the kingdom of Kengi passed away.

The final blow was struck by Lugal-zaggi-si, the son of the high-priest of the city of Opis.

Lugal-zaggi-si not only conquered Babylonia, he also created an empire.

On the vases of delicately-carved stone which he dedicated to the god of Nippur, a long inscription of one hundred and thirty-two lines describes his deeds, and tells how he had extended his dominion from the Persian Gulf to the Mediterranean Sea.

It may be that at this time the culture of Babylonia was first brought to the west, and that his conquests first communicated a knowledge of the Sumerian language and writing to the nations of western Asia.