Emperor Constantine gave the Christian Church considerable state patronage, built many magnificent churches and let men of ambition know that their advancement could depend on at least claiming to have converted to the Christian faith. He also began the long persecution of the pagan temples and even executed his log-time friend and mentor on the trumped-up charge that he had altered the winds to prevent urgent food relief from arriving in Constantinople. Constantine's sons and successors continued the patronage of the Christian Church and intensified the persecution of the pagans.
In 391, Emperor Theodosius I ordered that all temples be closed and that all forms of pagan worship cease. By the end of the century, anti-pagan legislation would serve as a licence for the increasing number of acts of vandalism and violent destruction directed against pagan and Jewish places of worship carried out by Christian mobs, often led by the local clergy. As late as the sixth century, legislation was promulgated prescribing the death penalty for anyone practising pagan sacrifice.
Rome's emperors achieved the spread of Christianity by the increasingly preferential treatment of Christians, massive financial support for the Church and centuries of persecution against all other faiths.
Christianity did not easily spread through the Roman Empire. See the related question, "How did Christianity spread throughout the Roman Empire?"
The spread of Christianity had political ramifications for the Roman Empire. The empire split into two, Constantinople to the east and Rome to the west
By 325ad Christianity had spread throughout the Roman Empire and to Britain. If you google "spread of Christianity map" you will find maps showing the spread.
Christianity
The Roman Empire.
The Roman Empire made Christianity the official religion of the Empire, and 'encouraged' the peoples it conquered to convert.
The Romans who remained pagans did not contribute to the spread of Christianity Neither did Julian, who was the only pagan emperor in the Later Roman Empire
1018
Christianity started in Judea in present day Israel, which was a province of the Roman Empire. It then spread around this empire.
As Roman Emporer, Constantine declared Christianity to be the official religion of the Roman Empire. At the time, the Empire was vast, so Christianity spread quickly.
Constantine
The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.The Roman empire was the tool enabling Christianity to spread. Christianity developed during the Pax Romana and during that time, with the good roads, safe sealanes, and relative peaceful conditions, new ideas were able to be exchanged and spread. Christianity was one of them.