Answer:
Christianity was one of the factors that led to the downfall and collapse of the Roman Empire.
Explanation:
Christianity began to flourish and become more of an influential factor in the Roman empire. It was even legalized by Emperor Constantine in 313 CE with The Edict of Milan. But this did not really interfere with or replace the orthodox or traditional Roman beliefs.
But in 380 CE, Emperor Theodosius's Edict of Thessalonica brought further development for the Christian religion. This also led to the declaration of Christianity as the official religion of Rome. With that, it interfered with the administration and traditional Roman beliefs, with the Pope and other religious powers getting involved with the political issues of the society. This rise in the involvement of religious leaders also led to difficulty in the governing system.
Therefore, Christianity did benefit from the Roman empire for it became more 'validated' and 'more world-known' but at the same time, it is one of the factors that contributed to the downfall of the Roman Empire.
