The expansion of the Phrygians into eastern Asia Minor is proved by the discovery of an inscription in the Phrygian lan guage at Tyana in Cappadocia. This text, it is true, does not appear to be of earlier date than the 8th century B.C. But the presence of Phrygians on the borders of the Euphrates may per haps be inferred from Assyrian records which relate victories by Tiglath-Pileser I. (c. 1120 B.C.) and by Sargon (717-7o9 B.c.) over a tribe named the Mushki. The fact that in one of Sargon's inscriptions the chief of the Mushki bears the name "Mita" sug gests that the Mushki were Phrygian, or at least had Phrygian rulers, for "Mita" or "Midas" was a common name among the kings of Phrygia proper.
The relation between the Phrygians and the Hittites, who were the predominant people in Asia Minor c. 15oo B.C., is not yet quite clear. The existence of a group of rock-carvings in Hittite style, extending from Ancyra to Sardes and Smyrna, suggests that Phrygia proper may at one time have been under Hittite government, but the character of Hittite influence in north western Asia Minor still remains uncertain. On the other hand there is little doubt that the decline of Hittite culture and the disappearance of Hittite power from Asia Minor after moo B.C. was in large measure due to the expansion of the Phrygians over the peninsula.
Soon after 700 B.C. the reign of Midas was brought to a sudden end by the incursion of a Thracian people named the Cimmerians, of which Greeks, Lydians and Assyrians felt the force, but the Phrygians took the full brunt. By the second half of the 7th
century the Cimmerians disappeared from Asia Minor without leaving a trace, but Phrygia was now so far enfeebled that it fell under the dominion of the neighbouring kingdom of Lydia.
After two centuries of uneventful history under Persian rule Phrygia passed into the hands of Alexander of Macedon, who visited Gordium (333 B.C.) and there cut the "Gordian knot"; legend declared that this knot, which secured the yoke to the shaft of an archaic farm-wagon, had been tied by Gordius, the founder of the Phrygian dynasty, and that whosoever might unravel it should become lord of Asia. After Alexander's death Phrygia became a battle-ground for the contending forces of his former marshals. At first it formed the nucleus of the territory of Antigonus, who set up his capital at Celaenae ; but after the decisive action at the neighbouring site of Ipsus (3o1 B.c.) it was transferred to Seleucus as an annex to the kingdom of Syria.
About 275 B.C. all the Phrygian lands east of the Sangarius came into the possession of a horde of Celtic invaders from the Danube lands and was renamed Galatia. The western portion of Phrygia at the same time was taken from the kings of Syria by the newly-founded monarchy of Pergamum. For nearly a cen tury the Phrygian territory remained a bone of contention be tween the kings of Pergamum and Syria and the Galatian Celts, until in 189 B.C. the Romans expelled the Syrian kings from Asia Minor, confined the Celts to Galatia, and left the western half of the peninsula under the undisputed control of the Pergamene rulers. After the annexation of the Pergamene kingdom by Rome in 133 B.C., Phrygia west of the Sangarius became part of the province of Asia, and remained in this condition until c. A.D. 300, when the emperor Diocletian constituted it into two independent provinces, Phrygia Prima and Secunda. Under the Byzantine empire the name Phrygia disappeared altogether.