Christianity grew in popularity in the centuries after it was founded because - O
A. it advocated a violent overthrow of oppressive states,
B. it appealed to the masses because of its message of equality.
C. it eliminated strict caste systems that limited social mobility.
D. it rejected the teachings of other Abrahamic faiths popular in the region.

B. it appealed to the masses because of its message of equality.

Explanation:

Christianity grew in popularity in the centuries after it was founded because it appealed to the masses because of its message of equality.

There was the issue of slavery around the world. It was frowned and unconstitutional in most parts but it continued to exist. In Christianity Jesus taught his disciples on the need to be humble and be willing to serve regardless of status and ethnicity. Christianity helped to ensure the people had a common ground and to be enlightened on the equality it supported.