What happened to Christians in the Roman Empire at the end of the third century?

There was no empire-wide persecution of Christians until the reign of Decius in the third century. ... With the passage in AD 313 of the Edict of Milan, in which the Roman Emperors Constantine the Great and Licinius legalised the Christian religion, persecution of Christians by the Roman state ceased.

Explanation:

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the answer is c.

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