Arabic language; Cities and towns; Greek language; Coptic language; Nile River; Christianity; Bishops; Council of Ephesus (431); Arab Conquest of Egypt
Roman Empire; Byzantine Empire; Christianity; Emperors--Byzantine Empire; Diocletian, Emperor of Rome, 245-313; Eusebius, of Caesarea, Bishop of Caesarea, ca. 260- ca. 340; Heresy; Persecution; Arius; Arians; Arianism; Athanasius, Saint, Patriarch...