When Marcianus and Pulcheria passed away, the empire came into the hands of a series of three men of ability. They were all bred as high civil officials, not as generals; all ascended the throne at a ripe age; not one of them won his crown by arms, all were peaceably designated either by their predecessors, or by the Senate and army. These princes were Leo I. (457-474), Zeno (474-491), Anastasius (491-518). Their chief merit was that they guided the Roman Empire in the East safely through the stormy times which saw its extinction in the West. While, beyond the Adriatic, province after province was being lopped off and formed into a new Germanic kingdom, the emperors who reigned at Constantinople kept a tight grip on the Balkan Peninsula and on Asia, and succeeded in maintaining their realm absolutely intact. Both East and West were equally exposed to the barbarian in the fifth century, and the difference of their fate came from the character of their rulers, not from the diversity of their political conditions. In the West, after the extinction of the house of Theodosius (455 A.D.), the emperors were ephemeral puppets, made and unmade by the generals of their armies, who were invariably Germans. The two _Magistri militum_, Ricimer and Gundovald—one Suabian, the other Burgundian by birth—deposed or slew no less than five of their nominal masters in seventeen years. In the East, on the other hand, it was the emperors who destroyed one after another the ambitious generals, who, by arms or intrigue, threatened their throne. While this comparison bears witness to the personal ability of the three emperors who ruled at Constantinople between A.D. 457 and A.D. 518, it is only fair to remember they were greatly helped by the fact that the German element in their armies had never reached the pitch of power to which it had attained in the West; the suppression of Gainas forty years before had saved them from that danger. But unruly and aspiring generals were not wanting in the East; the greatest danger of Leo I. was the conspiracy of the great _Magister militum_ Aspar, whom he detected and slew when he was on the eve of rebelling. Zeno was once chased out of his capital by rebels, and twice vexed by dangerous risings in Asia Minor, but on each occasion he triumphed over his adversaries, and celebrated his victory by the execution of the leaders of the revolt. Anastasius was vexed for several years by the raids of a certain Count Vitalian, who ranged over the Thracian provinces with armies recruited from the barbarians beyond the Danube. But, in spite of all these rebellions, the empire was never in serious danger of sinking into disorder or breaking up, as the Western realm had done, into new un-Roman kingdoms. So far was it from this fate, that Anastasius left his successor, when he died in A.D. 518, a loyal army of 150,000 men, a treasure of 320,000 lbs. of gold, and an unbroken frontier to East and West.