With the death of Alexander his plans were buried. He left no heir who could have held the empire together; his generals fought for the spoils. The result of the mighty struggles of the period of the Diadochi, which covers almost fifty years (323-277 B.C.), is, that the Macedonian empire is divided into three great powers; the kingdom of the Lagidæ, who from the seaport of Alexandria on the extreme western border of Egypt control the eastern Mediterranean with all its coasts, and the valley of the Nile; the kingdom of the Seleucidæ, who strive in continual wars to hold Asia together; and the kingdom of the Antigonidæ, who obtained possession of Macedonia, depopulated by the conquest of the world and again by the fearful Celtic invasion (280), and who, when they wish to assert themselves as a great power, must attempt to acquire an ascendency in some form or other over Greece and the Ægean Sea. Of these three powers the kingdom of the Lagidæ is most firmly welded together, being in full possession of all the resources that trade and sea power, money and politics, afford. To re-establish the universal monarchy was never its aim, even when circumstances seemed to tempt to it. But as long as strong rulers wear the crown it always stands on the offensive against the other two; it harasses them continually, hinders them at every step from consolidating, wrests from the Seleucidæ almost all the coast towns of Palestine and Phœnicia as far as Thrace, temporarily gains control of the islands of the Ægean, and supports every hostile movement that is made in Greece against Macedonia. The Greek mother-country is thus continually forced anew into the struggle, the play of intrigue between the court of Alexandria and the Macedonian state never gives it an opportunity to become settled. All revolts of the Greek world received the support of Alexandria; the uprising of Athens and Sparta in the war of Chremonides (264), the attempt of Aratus to give the Peloponnesus an independent organisation by means of the Achæan league (beginning in 252), and finally the uprising of Sparta under Cleomenes. The aim of giving the Greek world an independent form was never attained; finally, when at the end of the reign of Ptolemy III Euergetes (221) the kingdom of the Lagidæ withdraws and lets Cleomenes fall, the peninsula comes anew under the supremacy of the Macedonians, whom Aratus the “liberator” had himself brought back to the citadel of Corinth. But neither can the Macedonian king attain the full power that Philip and Alexander had possessed a century earlier; in particular, its resources are insufficient, even in alliance with the Achæans, to overthrow the warlike, piratical Ætolian state, which is constantly increasing in power. So Greece never gets out of these hopeless conditions; on the contrary, indeed, through the emigration of the population to the Asiatic colonies, through the decay of a vigorous peasant population which began