text: Though the situation had stabilized temporarily by the time of Constantine, waves of non-Roman peoples, most prominently the Thervings, Greuthungs and Huns, began to cross into the territory, first (in the case of the Thervingi) as refugees with imperial permission to take shelter from their foes the Huns, then later as invaders. Turning on their hosts after decades of servitude and simmering hostility, Thervingi under Fritigern and later Visigoths under Alaric I eventually conquered and laid waste the entire Balkan region before moving westward to invade Italy itself.
  By the end of the Empire the region had become a conduit for invaders to move westward, as well as the scene of treaties and complex political maneuvers by Romans, Goths and Huns, all seeking the best advantage for their peoples amid the shifting and disorderly final decades of Roman imperial power.
  Rise of Christianity
  Christianity first came to the area when Paul the Apostle and some of his followers traveled in the Balkans passing through Thracian, Illyrian and Greek populated areas. He spread Christianity to the Greeks at Beroia, Thessaloniki, Athens, Corinth and Dyrrachium. Andrew also worked among the Thracians, Dacians and Scythians, and had preached in Dobruja and Pontus Euxinus. In 46 AD, this territory was conquered by the Romans and annexed to Moesia.
  In 106 AD the emperor Trajan invaded Dacia. Subsequently, Christian colonists, soldiers and slaves came to Dacia and spread Christianity.