What is the Council of Nicea?
Short Answer: The council was a gathering of religious “Christian” “authorities” after Constantine lifted the ban on religions. Much debate occurred, resulting in some attendees being asked to leave (as heretics). It basically established the authority in what would become the Catholic Churches, which splintered into the Roman Catholic Church and “all the rest” in the great schism. From wikipedia: “The First Council of Nicaea was a council of Christian bishops convened in Nicaea in Bithynia (present-day İznik in Turkey) by the Roman Emperor Constantine I in AD 325. The Council was historically significant as the first effort to attain consensus in the church through an assembly representing all of Christendom.