This concept map summarizes the relationship between Rome and Christianity. It explains the birth of Jesus in Palestine during the reign of Augustus, the spread of Christianity throughout the Roman Empire, the persecution of Christians, the role of the catacombs and martyrs, the Edict of Milan issued by Constantine (AD 313), and the proclamation of Christianity as the official religion of the Empire under Theodosius (AD 380). A clear study aid for primary and middle school history.