Question

During the fourth century,Christianity became the official state religion of

Answer 1

During the fourth century Christianity became the official state religion of Rome.

The Roman Emperor, The Great Theodosius made Christianity the official religion of the Roman Empire through the "Cunctos populos" on February 27 380 AD ending Christian persecution.

Answer 2

Christianity during the fourth century.

In 313, important development in the history of Christianity. The official religion of the Roman Empire at that  time was Christianity. Roman religious beliefs changed over the time. Christianity was the popular sect in the Roman Empire at that time. Christianity was deeply affected by Judaism and Roman cultural institutions.