Explain how Christianity spread throughout Europe

Soldiers, merchants and missionaries started to spread Christianity north and west in Europe beginning in the Middle East.

Christianity is the religion with the highest number of adherents in the world, about 2.1 billion followers. These adherents receive the name of Christians. It is a monotheistic religion, in other words, Christians believe and worship only one God. Christianity is based on the life, death and teachings of Jesus of Nazareth.

It was spread by merchants, military, and missionaries. As a result, the edict of milan was passed