In both countries there was an aristocracy of birth based originally on the possession of land. But in Babylonia it tended at an early period to be absorbed by the mercantile and priestly classes, and in later days it is difficult to find traces even of its existence. The nobles of the age of Nebuchadnezzar were either wealthy trading families or officers of the Crown. The temples, and the priests who lived upon their revenues, had swallowed up a considerable part of the landed and other property of the country, which had thus become what in modern Turkey would be called _wakf_. In Assyria many of the great princes of the realm still belonged to the old feudal aristocracy, but here again the tendency was to replace them by a bureaucracy which owed its position and authority to the direct favor of the King. Under Tiglath-pileser III. this tendency became part of the policy of the government; the older aristocracy disappeared, and instead of it we find military officers and civil officials, all of whom were appointed by the Crown. While, accordingly, Babylonia became an industrial and priestly state, Assyria developed into a great military and bureaucratic organization. It taught the world how to organize and administer an empire. Tiglath-pileser III. inaugurated a course of policy which his successors did their best to carry out. He aimed at reviving the ancient empire of Sargon of Akkad, of uniting the civilized world of Western Asia under one head, but upon new principles and in a more permanent way. The campaigns which his predecessors had carried on for the sake of booty and military fame were now conducted with a set purpose and method. The raid was replaced by a carefully planned scheme of conquest. The vanquished territories were organized into provinces under governors appointed by the Assyrian King and responsible to him alone. By the side of the civil governor was a military commander, who kept watch upon the other’s actions, while under them was a large army of administrators. Assyrian colonies were planted in the newly acquired districts, where they served as a garrison, and the native inhabitants were transported to other parts of the Assyrian empire. In this way an attempt was made to break the old ties of patriotism and local feeling, and to substitute for them fidelity to the Assyrian government and the god Assur, in whose name its conquests were made.