Mt:8:25: And his disciples came to him, and awoke him, saying, Lord, save us: we perish.
You need to specify what is is that we need to compare the rise of Christianity in the Roman Empire to.
Atheism is not a religion. There is no need to convert to it, and no need to confirm into it.
You really need to narrow your question down a bit. A lot of Jews embraced Christianity, and, over the next several centuries, a lot of pagans embraced Christianity.
That answer depends on the religious views of the person answering it.
There are many different books on Christianity and you would need to specify what topic under Christianity you would like to research to narrow the choices. The Bible is one of the best sources because it is the Christian religious book.
No. Christianity and Religion were created by mankind to oppress the masses. You can believe in God, Jesus, whomever, without the unnecessary baggage that comes with religion.
Legal proof? Well there are many many converts to Christianity in India from Hindus & Muslims. In fact all Indian Christians were Hindus first. It was the British Missionaries who converted many to Christianity. If you need more proof visit your local protestant church and ask them.
Catholism, and Muslim
Christians are Christians they need something to compare against in order to have similarities
Christianity. Need more info, google: Constantine, Constantinople.
I don't really know that is why I need you to tell me the answer
God started Christianity. He was the one who made everyone, and the reason you are here today. We, the people worship him and give him praise for what he has done for us.