acts as the first christian emperor of rome is to issue the edict of milan. this not only makes christianity legal, but favored. >> this is a big one. for the first time, a roman emperor decided to ally with the church. that meantime the whole of the known world was at the disposal of the church. >> as constantine moves christianity from outlaw to exalted, church and state become intertwined. >> constantine saw in christianity a way of uniting the empire. a new ideology that would give everybody the same god, the same moral values. >> constantine, by legalizing christianity, opened up a space by the bishop of rome that could become a fixture. >> what constantine did is take the bishops who had been previously persecuted and make