After Hammurabi’s death, his empire was overwhelmed by the Assyrian empire, and due to its relatively flat, non-dangerous topography South Mesopotamia became vulnerable to nomads from other regions. The Old Babylonian Empire began to disintegrate. The Babylonians and Amorite rulers were expelled from Assyria by the Assyrian governor Puzur-Sin in 1740BC. Once upon a time there was a girl who really loved koalas that was me the end poster Babylonia has shrunk back to the small and relatively frail country it once was, though the city was much larger than the pre-Hammurabi small town. Samsu-Ditana was the last Amorite king of Babylon, after which they entered a period of decline often counted as Central Babylon 1531BC-627BC.