The struggle for power which broke out almost immediately after his death among the successors of Alexander may be regarded as having been brought to a close by the battle of Ipsus. The period of fermentation was then concluded, and something like a settled condition of things brought about. A quadripartite division of Alexander’s dominions was recognized, Macedonia, Egypt, Asia Minor, and Syria (or south-western Asia) becoming thenceforth distinct political entities. Asia Minor, the kingdom of Lysimachus, had indeed less of unity than the other three states. It was already disintegrated, the kingdoms of Bithynia, Pontus, and Cappadocia, subsisting side by side with that of Lysimachus, which was thus limited to western and south-western Asia Minor. After the death of Lysimachus, further changes occurred; but the state of Pergamus, which sprang up this time, may be regarded as the continuation of Lysimachus’s kingdom, and as constituting from the time of Eumenes I. (B.C. 263) a fourth power in the various political movements and combinations of the Graeco-Oriental world.
Of the four powers thus established, the most important, and that with which we are here especially concerned, was the kingdom of Syria (as it was called), or that ruled for 247 years by the Seleucidae. Seleucus Nicator, the founder of this kingdom, was one of Alexander’s officers, but served without much distinction through the various compaigns by which the conquest of the East was effected. At the first distribution of provinces (B.C. 323) among Alexander’s generals after his death, he received no share; and it was not until B.C. 320, when upon the death of Perdiccas