From the middle of the ninth century also the struggles of the weakening Hittite tribes against the reviving power of Assyria were renewed; and this time they were doomed. Their lands of Syria and in the Taurus were thereafter the objective of many punitive expeditions on the part of successive Assyrian kings, who claim always to have conquered and exacted tribute. For over a century, however, though many times defeated and severely punished, these states as often found opportunity for casting off the yoke. But Sargon, late in the eighth century, adopted with stern determination the policy which his predecessors had initiated, of transporting large numbers of the rebellious population and replacing them by Assyrian colonists. One by one the greater Hittite centres on his frontiers were absorbed, and when the Assyrian forces passed into Asia Minor to challenge the supremacy of the Phrygian Midas, about 718 B.C., it is clear that these two powers had divided the Hittite territory between them. The appearance, too, in the north, of the Cimmerians, in wellnigh irresistible strength, had changed the political horizon.[82] From one point of view, however, it would be natural to point to the destruction of Pteria by Crœsus, in the middle of the sixth century B.C., as the last event of Hittite history, and so begin our post-Hittite story from that time. The conquest by Cyrus and the reunification of all the Hittite lands under Persian rule a few years later, in 546, would provide a suitable starting-point; yet, in fact, from the age of Sargon, a century and a half before, there can be traced no real semblance of surviving Hittite power nor any of the old Hittite individuality in the local arts. Their very name then almost disappeared from Oriental history, and was retained but as a memory; while in Asia Minor the power of the Phrygian kings was then at its zenith, and in the presence of Phrygian inscriptions at Eyuk,[83] near the old Hittite capital, and at Tyana,[84] which seems to have replaced Pteria in importance in the revival of the tenth century, there is indication that the Hittite day was already ended. But though the Hittite power was broken and disintegrated, their civilisation faded only gradually from view. Long after the sun had set upon its pride it lingered on, felt rather than seen, in the twilight that obscures our vision of the tableland in the early part of the first millennium B.C., surviving long enough here and there, as we shall see, in the form of institutions and religious customs, to have left a trace in the pages of Greek history. Thereafter we have several clear phases to review, interrupted by others of considerable disturbance and obscurity. Following the overthrow of Assyria on the one hand, and the decline of Phrygia on the other, two new powers appeared in the sixth century in the Medes and the Lydians, who similarly divided Asia Minor, with the Halys as their mutual boundary.