The next king to unite Mesopotamia after the fall of the akkadian empire was Hammurabi and his capital city was Babylon. The babylonian political achievement is the code of Hammurabi that were laws . This achievement was important because the laws unified his empire to preserve order. The Babylonian economic achievement of trade in grain and woven cloth for wood,, gold , silver , precious gems , and livestock. This achievement was important because it helped build the empire's economy and connected them with distant lands.