Akkadians conquered the Sumerians city-states in 2300 B.C.E.
the Babylonian political achievement of the code of Hammurabi that were laws.This achievement was important because the laws unified his empire to preserve order.
the Assyrian military achievement of perfecting the use of horse,iron weapons for battle,and siege warfare.This achievement was important because they came up with new ways to push people out of lands they wanted to conquered.
the Neo-Babylonian military achievement of building walls around Babylonia.This achievement was important because it kept the capital safe from invaders.
There was a military leader named Chandragupta. He sword that he would not launch any more wars conquest