Roman Empire; Diocletian, Emperor of Rome, 245-313; Administration; Government; Egypt; Libya; Council of Constantinople (1st: 381); Council of Chalcedon (451); Justinian I, Emperor of the East, 483?-565; Monothelitism; Constantinople
Patriarchs and patriarchate; Justinian I, Emperor of the East, 483?-565; Theodora, Empress, consort of Justinian I, Emperor of the East, d. 548.; Severus, of Antioch, ca. 465-538; Monophysites; Christology; Council of Chalcedon (451); Orthodoxy;...