Christianity
No, no they did not. They had their own religion which predates the bible. They weren't christians and had their own beliefs on things.
The dominant religion in the Roman Empire was the Roman religion until Christianity became the dominant religion.
they studied Christianity after they were conquered
No, the Phoenix predates Christianity
Before Christianity came to Britain, the priests of the ancient Briton were of the Druid religion. This was a pagan religion and they offered human sacrifice.
Christianity differs from ancient Roman religion in several key ways. One major difference is that Christianity is monotheistic, believing in one God, while Roman religion was polytheistic, worshiping multiple gods and goddesses. Additionally, Christianity emphasizes the importance of faith, salvation, and forgiveness, while Roman religion focused more on rituals, sacrifices, and appeasing the gods. The concept of an afterlife and the idea of a personal relationship with God are also central to Christianity, whereas these were not prominent beliefs in ancient Roman religion.
Before Christianity, they were pagan.
No, cuneiform predates it by a few thousand years. Cuneiform was used in ancient Babylon, which had a polytheistic religion.
Over 5000 years ago and predates Christianity.
Christianity thanks to all the misionary work it is over 50%
Somehow they believed in a religion that is practically considered hell in Christianity.