Watch The Papacy: Popes and Roman Emperors

The Empire became Christian; the Germans invaded; the Church was trying to define its dogma. In these tumultuous times the Pope undertook the defense of the city of Rome while trying to defend his position against the emperor and patriarch in Constantinople. The pontificate of Gregory the Great marks the transition from the ancient to the medieval papacy. An adult-education lecture.

The Papacy: Popes and Roman Emperors is a 2014 documentary with a runtime of 1 hour and 21 minutes.