317 to 289. Agathocles is tyrant of Syracuse; and carries on repeated wars with the Carthaginians; in the course of which (311) he invades Africa, and reduces the Carthaginians to great distress.
306. After a long series of wars with each other and after all the heirs of Alexander had been murdered, his principal surviving generals assume the title of king, each over the provinces which he has occupied. The four chief among them were Antigonus, Ptolemy, Lysimachus, and Seleucus. Antipater was now dead, but his son Cassander succeeded to his power in Macedonia and Greece.
301. Seleucus and Lysimachus defeat Antigonus at Ipsus. Antigonus is killed in the battle.
280. Seleucus, the last of Alexander's captains, is assassinated. Of all of Alexander's successors Seleucus had formed the most powerful empire. He had acquired all the provinces between Phrygia and the Indus. He extended his dominion in India beyond the limits reached by Alexander. Seleucus had some sparks of his great master's genius in promoting civilization and commerce, as well as in gaining victories. Under his successors, the Seleucidæ, this vast empire rapidly diminished: Bactria became independent, and a separate dynasty of Greek kings ruled there in the