=34.= Antiochus III., the Great, had an eventful reign of thirty-six years. Molo, his general, first revolted, and made himself master, one by one, of the countries east of the Euphrates, destroying all the armies sent against him. Antiochus at length defeated him, B. C. 220, and then made war upon Egypt for the recovery of Syria and Palestine, which had hitherto been held by Ptolemy. He was successful at first, but his defeat at Raph´ia robbed him of all his conquests, except Seleucia in Syria. Achæ´us, his cousin, and hitherto a faithful servant of Antiochus and his father, had meanwhile been driven into revolt by the false accusations of Hermi´as, the prime minister. He subjected to his control all the countries west of the Taurus. As soon as peace had been made with Egypt, the king of Syria marched against him, deprived him of all his possessions in one campaign, besieged him two years in Sardis, and finally captured and put him to death. =35.= The Parthian king, Arsaces III., had taken up arms against Media. Antiochus led an army across the desert to Hecatom´pylos, the Parthian capital, which he captured; but the battle which followed was indecisive, and Arsaces remained independent, with the possession of Parthia and Hyrcania. The war against the Bactrian monarch had a similar result, Euthyde´mus retaining Bactria and Sogdiana. Antiochus penetrated India, and renewed the old alliance of Seleucus Nicator with the king of the upper Ganges. Wintering in Kerma´nia, the Syrian king made a naval expedition, the next year, against the piratical Arabs of the western shores of the Persian Gulf. On his return from his seven years’ absence in the East, Antiochus received the title of “Great,” by which he is known in history. =36.= The same year, B. C. 205, Ptolemy Epiph´anes, a child of five years, succeeded his father in Egypt. Tempted by the unprotected state of the kingdom, Antiochus made a treaty with Philip of Macedon to divide the dominions of Ptolemy between them. Philip’s designs were interrupted by a war with Rome, the now powerful republic of the West. Antiochus carried on the contest with great energy, but with varying success, in Cœle-Syria and Palestine. By the decisive battle of Pa´neas, B. C. 198, he gained complete possession of those provinces; but desiring to prosecute his wars in another direction, he married his daughter Cleopatra to the young king of Egypt, and promised the conquered country as her dower.