Ruler of Ur

The 3rd dynasty of Ur (21th cent. BC) brought about a Sumerian Renaissance.
Ur-nammu of Ur proclaimed himself king and soon conquered all of Sumer and Akkad.

Shulgi brought the empire of
Ur III to its height. He conquered Elam and Upper Mesopotamia and ruled his centralized staat from his capital Ur. He promoted trade and cattle-breeding, and improved agriculture through better irrigation methods

Like the Akkadian kings, he proclaimed himself the divine 'King of the Four Quarters' and built himself a mausoleum.

King of Babylon

Hammurabi brought Babylon to its 150-year rule over southern Mesopotamia, known as the Old Babylonian Kingdom. He systematically unified all of the old world of Sumer and Akkad under his strongly centralized government.

He was an Amorite, the name given to a Semitic group that settled in the Fertile Crescent about 2000 B.C. Hammurabi made Babylon one of the great cities of the ancient world.

In the first year of his reign Hammurabi fulfilled a promise to the Babylonian god Marduk and established an extensive law system which encompassed nearly every area of ancient life. The Code of Hammurabi was over 300 paragraphs long and included sections on social, moral, religious, commercial and civil law.

www link :
The Code of Hammurabi