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; Catechetical School of Alexandria; Persecution; Diocletian, Emperor of Rome, 245-313; Martyrs; Society and Church; Paganism; Conversion - Christianity