The Akkadian hegemony was relatively short. After 200 years, under Sargon’s great-grandson, it was overthrown, apparently by mountain peoples called Gutians, and the last phase of Sumer, called ‘neo-Sumerian’ by scholars, began. For another 200 years or so, until 2000 BC, hegemony again passed to the native Sumerians. This time its centre was Ur and, though it is hard to see what it meant in practice, the first king of the Third Dynasty of Ur who exercised this ascendancy called himself King of Sumer and Akkad. Sumerian art in this phase showed a new tendency to exalt the power of the prince; the tradition of popular portraiture of the archaic period almost vanished. The temples were built again, bigger and better, and the kings seem to have sought to embody their grandeur in the ziggurats. Administrative documents show that the Akkadian legacy was strong, too; neo-Sumerian culture shows many Semitic traits and perhaps the aspiration to wider kingship reflects this inheritance. The provinces which paid tribute to the last successful kings of Ur stretched from Susa, on the frontiers of Elam on the lower Tigris, to Byblos on the coast of Lebanon.
This was the sunset of the first people to achieve civilization. Of course they did not disappear, but their individuality was about to be merged in the general history of Mesopotamia and the Middle East. Their great creative era was behind them and has focused our attention on a relatively small area; the horizons of history are about to expand. Enemies abounded on the frontiers. In about 2000 BC, the Elamites came and Ur fell to them. Why, we do not know. There had been intermittent hostility between the peoples for a thousand years and some have seen in this the outcome of a struggle to control the routes of Iran which could guarantee access to the highlands where lay minerals the Mesopotamians needed. At all events, it was the end of Ur. With it disappeared the distinctive Sumerian tradition, now merged in the swirling currents of a world of more than one civilization. It would now be only occasionally visible in patterns made by others. For fifteen centuries or so Sumer had built up the subsoil of civilization in Mesopotamia, just as its pre-civilized forerunners had built up the physical subsoil on which it itself rested. It left behind writing, monumental buildings, an idea of justice and legalism, the beginning of mathematics and a great religious tradition. It is a considerable record and the seed of much else. The Mesopotamian tradition had a long life ahead of it and every side of it was touched by the Sumerian legacy.
While the Sumerians had been building up their civilization, their influence had contributed to changes elsewhere. All over the Fertile Crescent new kingdoms and peoples had been appearing. They were stimulated or taught by what they saw in the south and by the empire of Ur, as well as by their own needs. The diffusion of civilized ways was already rapid. This makes it very hard to delineate and categorize the main processes of these centuries in a clear-cut way. Worse still, the Middle East was for long periods a great confusion of peoples, moving about for reasons we often do not understand. The Akkadians themselves had been one of them, pushing up originally from the great Semitic reservoir of Arabia to finish in Mesopotamia. The Gutians, who took part in the Akkadians’ overthrow, were northerners. The most successful of all of these peoples were the Amorites, a Semitic group which had spread far and wide and joined the Elamites to overthrow the armies of Ur and destroy its supremacy. They had established themselves in Assyria, or upper Mesopotamia, in Damascus and in Babylon in a series of kingdoms which stretched as far as the coast of Palestine. Southern Mesopotamia, old Sumer, they continued to dispute with the Elamites. In Anatolia their neighbours were the Hittites, an Indo-European people who crossed from the Balkans in the third millennium. At the edges of this huge confusion stood another old civilization, Egypt, and the vigorous Indo-European peoples who had filled up Iran. The picture is a chaos; the area is a maelstrom of groups pushing into it from all sides. Patterns grow hard to distinguish.