Romans treat the christians? e. they persecuted themc. they generally left them aloneb. believed in complete religious freedomc. wanted to gain the favor of the christian god.5. one of the causes of the collapse of pax romana wasb. the growth of christianityc. lower taxes6. the reign of diocletian was marked by all of the following excepta. greater freedomb. economic reformc. governmental reorganization7. franks, vandals, goths were known asa. barbariansb. christian sectsc. christian symbols8. the purpose of st. augustine's the city of god was toa. teach christianity to the barbariansb. argue that rome should again be the capital of the empirec. defend christianity from those who thought it was the cause of the deof the empire.