How did constantine i make christianity a unifying force in the byzantine empire?

a. he promoted iconoclasm.
b. he promoted religious tolerance.
c. he repealed the edict of milan.
d. he divided the roman empire.

Constantine 1 made Christianity the unifying force by B. promoting religious tolerance. Through doing so, he allowed Christianity to spread throughout the Empire, until it was strong enough to the point where he declared it the official religion of the Empire.

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