Light in dark ages By Cameronaresco1 451 BCE Council of Chalcedon defined human and divine natures of Chris in one person 445 BCE Emp. Valentinian III acknowledges papal supremacy 431 BCE Council of Ehesusn defined Mary to be mother of god 430 BCE St Augustine dies 418 BCE Franks take Gaul 410 BCE Visigoths sack rome under king Alaric