https://www.khanacademy.org/humanities/world-history/ancient-medieval/christianity/v/arian-controversy-and-the-council-of-nicaea
The Nicene Creed (What we believe
Everyone Merged into One Christianity
The Books of the Bible are Selected or Excluded
Major Principals: Jesus is Eternal (More than just a Prophet)
The Role of Constantine, His Mother (and her shopping trips)
The proximity of Rome (the eternal City, Constantanople, Alexandria, Jerusalem)