The reason why Christianity took hold of the Ancient world because it offered a equal, peaceful and happy life. This is the first reason of why people wanted to join Christianity. First Christians have peace using Justice while the Romans have peace but use war.
How Christianity was preserved by the Roman Empire?
In 313 AD, the Emperor Constantine issued the Edict of Milan, which accepted Christianity: 10 years later, it had become the official religion of the Roman Empire.
It is the "D. Department of Transportation" that was not created as part of President Johnson's Great Society Program, since the Great Society Program focussed more directly on the wellbeing of US citizens.
A. gap in the law is correct