Answer: Christianity wasn't legalized at first in Roman Empire as Judaism was the legal religion.
Explanation:
The majority of the people in ancient Rome resided in the countryside where there was less than ten thousand people. Landlords lived in cities and their estates were managed by farm managers. To boost a higher labor productivity, slaves were freed by several owners and they received wages.
After the death of Jesus Christ, many letters were written by Apostle Paul to the few Christians living in the Roman Empire. At that time, Judaism was the legal religion in Rome and had formal protections. Even though Christianity came from Jewish traditions, there was no legal backing for it and Christians were sometimes persecuted and punished.
Years later, Emperor Constantine provided the Edict of Milan which gave access to Christianity and made it legal
