391 AD by Theodosius I.
Rome's official religion was Christianity after 380 AD. Before this time there was no "official" religion as Rome was tolerant of all beliefs.
on Feburary 27th, 380 they made Nicene Christianity the official Christian religion of Rome, however it is unclear whether this was intended to apply to pagans.
Chistianity became popular because Rome adopted it.
Israel of course, and then to Rome and westerly from there.
christianity
Christianity
Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.Christianity. It was the only official religion of Rome and was imposed upon the people in 380 AD by the emperor Theodosius I.
Christianity was established as the main religion of Rome in AD 313.
The emperor who made Christianity Rome's official religion was Theodosius I.
In 313 AD.
The emperor Theodosius I is the emperor who made the Christin faith the official religion of he empire. Not only did he make Christianity mandatory, but he persecuted pagans and destroyed heir temples.
325 A.D.