The native tenants of this line of coast, upon whom the Greek settlers intruded themselves (reckoning from the westward), were the Bithynian Thracians, the Mariandyni, the Paphlagonians, the Tibarêni, Chalybes, Mosynœki, Drilæ, and Kolchians. Here, as elsewhere, these natives found the Greek seaports useful, in giving a new value to inland produce, and in furnishing the great men with ornaments and luxuries to which they would otherwise have had no access. The citizens of Herakleia had reduced into dependence a considerable portion of the neighboring Mariandyni, and held them in a relation resembling that of the natives of Esthonia and Livonia to the German colonies in the Baltic. Some of the Kolchian villages were also subject, in the same manner, to the Trapezuntines;[197] and Sinôpê doubtless possessed a similar inland dominion of greater or less extent. But the principal wealth of this important city arose from her navy and maritime commerce; from the rich thunny fishery attached to her promontory; from the olives in her immediate neighborhood, which was a cultivation not indigenous, but only naturalized by the Greeks on the seaboard; from the varied produce of the interior, comprising abundant herds of cattle, mines of silver, iron, and copper in the neighboring mountains, wood for ship-building, as well as for house furniture, and native slaves.[198] The case was similar with the three colonies of Sinôpê, more to the eastward,—Kotyôra, Kerasus, and Trapezus; except that the mountains which border on the Euxine, gradually approaching nearer and nearer to the shore, left to each of them a more confined strip of cultivable land. For these cities the time had not yet arrived, to be conquered and absorbed by the inland monarchies around them, as Miletus and the cities on the eastern coast of Asia Minor had been. The Paphlagonians were at this time the only indigenous people in those regions who formed a considerable aggregated force, under a prince named Korylas; a prince tributary to Persia, yet half independent,—since he had disobeyed the summons of Artaxerxes to come up and help in repelling Cyrus[199]—and now on terms of established alliance with Sinôpê, though not without secret designs, which he wanted only force to execute, against that city.[200] The other native tribes to the eastward were mountaineers both ruder and more divided; warlike on their own heights, but little capable of any aggressive combinations. [197] Strabo, xii, p. 542; Xen. Anab. iv, 8, 24. [198] Strabo. xii, p. 545, 546. [199] Xen. Anab. v, 6, 8. [200] Xen. Anab. v, 5, 23.