The first person to legalize christianity was constantine I
Belong to a person by birth or to a thing by nature; inherent native ability; native grace
Electricity and magnetism
That would be the Roman Catholic Church.
Both sides were Christian churches but the Eastern one based around Byzantium was Orthodox while the Western one based around Rome and Pope was the Roman Catholic church. They still exist today except that the Orthodox church is not unified by a single leader and countries that practice Orthodox Christianity each have their own religious leader.
In it, he says that the nation will not have morality unless it has "<span>d) religion" although it should be noted that he wasn't referring to a specific religion necessarily, since the Founders believed in religious freedom. </span>