Was it true that the Roman Empire never stopped trying to destroy Christianity?

Answer 1

It is not true. For the first three hundred years there were periodic persecutions of the Christians. However, from Constantine the Great on, the Roman emperors endorsed Christianity, favoured it and promoted it. The co-emperors Gratian and Theodosius I issued an edict which made mainstream Christianity the state religion of the empire. Latin (or Western) Christianity and Greek (or Eastern) Christianity, the two branches of mainstream Christianity, were made the sole legitimate religion of the empire. Later they came to be called Catholic and Orthodox respectively. Dissident Christian doctrines were branded as heretic and banned. Theodosius I persecuted these dissident doctrines, particularly Arian Christianity, which was popular around the empire. Theodosius also persecuted pagan religions.

It can be said that the Romans have given us Catholic and Orthodox Christianity, which developed in the Roman days and thrived thanks to their endorsement by the last Roman Emperors.