Emperor Valerian, and takes him prisoner. General distress of the Roman empire.
268 — 283. The Emperors Claudius, Aurelian, Tacitus, Probus, and Carus defeat the various enemies of Rome, and restore order in the Roman state.
285. Diocletian divides and reorganizes the Roman Empire. After his abdication in 305 a fresh series of civil wars and confusion ensues. Constantine, the first Christian emperor, reunites the empire in 324.
330. Constantine makes Constantinople the seat of empire instead of Rome.
363. The Emperor Julian is killed in action against the Persians.
364 — 375. The empire is again divided, Valentinian being emperor of the West, and Valens of the East. Valentinian repulses the Alemanni, and other German invaders from Gaul. Splendour of the Gothic kingdom under Hermanric, north of the Danube.
375 — 395. The Huns attack the Goths, who implore the protection of the Roman emperor of the East. The Goths are allowed to pass the Danube, and to settle in the Roman provinces. A war soon breaks out between them and the Romans, and the emperor Valens and his army are destroyed by them. They ravage the Roman terri-
