Cappadocia, in this sense, was bounded S. by the chain of Mount Taurus, E. by the Euphrates, N. by Pontus, and W. vaguely by the great central salt desert. But it is impossible to define its limits with accuracy. Strabo, the only ancient author who gives any circumstantial account of the country, greatly exaggerated its dimensions; it was in reality about 250 miles in length by less than 150 in breadth.
The kingdom of Cappadocia was still in existence in the time of Strabo as a nominally independent state. Cilicia was the name given to the district in which Caesarea, the capital of the whole country, was situated. The only two cities of Cappadocia considered by Strabo to deserve that appellation were Caesarea (originally known as Mazaca) and Tyana, not far from the foot of the Taurus.
Little is known of the history of Cappadocia before it became subject to the Persian empire, except that the country was the home of a great Hittite power centred at Boghaz-Keui which has left monuments at many places. With the decline of the Syro-Cappadocians after their defeat by Croesus, Cappadocia was left in the power of a sort of feudal aristocracy, dwelling in strong castles and keeping the peasants in a servile condition, which later made them apt for foreign slavery. It was included in the third Persian satrapy in the division established by Darius, but long continued to be governed by rulers of its own, none apparently supreme over the whole country and all more or less tributary to the Great King. Thoroughly subdued at last by the satrap Datames, Cappadocia recovered independence under a single ruler, Ariarathes (hence called Ariarathes I), who was a contemporary of Alexander the Great, and maintained himself on the throne of Cappadocia after the fall of the Persian monarchy.
The province was not visited by Alexander, who contented himself with the tributary acknowledgment of his sovereignty made by Ariarathes before the conqueror's departure from Asia Minor; and the continuity of the native dynasty was only interrupted for a short time after Alexander's death, when the kingdom fell, in the general partition of the empire, to Eumenes. His claims were made good in 322 by the regent Perdiccas, who crucified Ariarathes; but in the dissensions following Eumenes's death, the son of Ariarathes recovered his inheritance and left it to a line of successors, who mostly bore the name of the founder of the dynasty.
Under the fourth of the name Cappadocia came into relations with Rome, first as a foe espousing the cause of Antiochus the Great, then as an ally against Perseus of Macedon. The kings henceforward threw in their lot with the Republic as against the Seleucids, to whom they had been from time to time tributary. Ariarathes V marched with the Roman proconsul Crassus against Aristonicus, a claimant to the throne of Pergammum, and their forces were annihilated (130 B.C.). The imbroglio which followed his death ultimately led to interference by the rising power of Pontus and the intrigues and wars which ended in the failure of the dynasty.
The Cappadocians, supported by Rome against Mithradates, elected a native lord, Ariobarzanes, to succeed (93 B.C.); but it was not till Rome had disposed at once of the Pontic and Armenian kings that his rule was established (63 B.C.). In the civil wars Cappadocia was now for Pompey, now for Caesar, now for Antony, now against him. The Ariobarzanes dynasty came to an. end and a certain Archelaus reigned in its stead, by favour first of Antony, then of Octavian, and maintained tributary independence till A.D. 17, when the emperor Tiberius, on Archelaus's death in disgrace, reduced Cappadocia at last to a province.
Edited and wikified from an encyclopedia of 1911