| | | Campaigns of Marcus Aurelius| | | | | in Pannonia. | | | | | The legions in Illyria, | | | | | largely composed of | | | | | “barbarians,” acquire | | | | | power. | | | | | After Commodus, series of | | | | | emperors by military | | | | | selection. | | | | Successful campaigns of | Severus temporarily assigns | | Severus against | the West to Clodius | | | | Parthians. | Albinus. | | | 200 +--------------------------+-----------------------------+ 200 | | | Persian kingdom of the | Further systematising of | | | | Sassanides displaces | Roman law by the _juris | | | | the Parthian Empire. | consulti_, Ulpian, etc. | | | | | Increasing pressure of | | | | | Teutonic tribes on the | | | | | frontier. Campaigns of | | | | | Maximinus. | | | | | Decius emperor: official | | | | | persecution of | | | | | Christianity. | | | 250 +--------------------------+-----------------------------+ 250 | | | Overthrow of Emperor | Advance of the Goths and | | | | Valerian in the East by| Alemanni checked | | | | the Persians. | by Claudius and Aurelian. | | | | Destruction of Palmyra | Diocletian emperor. Division| | | | in the reign of | of the Empire under a | | | | Zenobia. | subordinate “Augustus” and| | | | | two subordinate “Cæsars”. | | | 300 +--------------------------+-----------------------------+ 300 | | | Extension of Buddhism | Last persecution of | | | | in China. | Christians under | | | | | Diocletian. | | | | | Constantine the Great. | | | | | Constantinople (New Rome, | | | | | Byzantium) is made the | | | | | centre of the Empire. | | | | | Christianity established as | | | | | the State religion | |