Antigonus, however, failed to conquer Egypt, and the other rulers also took the title of king.
For almost 10 years he had been governing Phrygia and had shown himself a brave soldier and competent administrator.Then, in 319, Antipater died and was succeeded by a senior commander but maladroit politician named Polyperchon, who tried to win the Greeks of the mainland by a new proclamation of their liberties.The result was that the Athenians used their freedom to execute the pro-Macedonians, including the worthy but compromising Phocion. Eumenes, allied with Polyperchon, challenged Antigonus and secured Babylon, but he was betrayed and killed in 316. Polyperchon’s position was weak, and he was soon ousted by the able, up-and-coming Cassander.Leonnatus intervened, nominally in support but in fact ambitious to usurp Antipater’s power; he was killed in action, however.In the end Antipater won, Athens capitulated, and Demosthenes (the voice and symbol of anti-Macedonian feeling) committed suicide.Cassander had her put to death, while keeping Rhoxane and Alexander IV under his protection—or guard.Antigonus was now the dominant figure of the old brigade.Demetrius escaped, retaining Tyre and Sidon and command of the sea.Lysimachus took large portions of Anatolia; Seleucus assumed control over Mesopotamia and Syria, except for a part in the south occupied de facto by Ptolemy; and Cassander was content with Macedonia and parts of Greece.In 311 the four leaders agreed to divide the world, leaving Ptolemy with Egypt and Cyprus, Antigonus with Asia, Lysimachus with Thrace, and Cassander with Macedonia and Greece, but only until Alexander IV came of age in 305. Royal blood, however, was quickly forgotten in the pursuit of power.Cassander murdered Rhoxane and young Alexander in 310, soon after Antigonus had vainly tried to crush Seleucus.