By the third century c. e., christian communities in mesopotamia and iran deeply influenced christian practices in the roman empire through their
a) nestorian beliefs.
b) confucian traditions.
c) ascetic values.
d) philosophy reflected by st. augustine.
e) all these answers are correct.

The answer is c. ascetic values.  At first Christians were persecuted by Rome and many Christians were scattered to different countries.  Later on when Constantine allowed Christianity to be worshipped the religion grew as more people converted to the Christian faith.

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