Answer:
As Saint Paul refers to all the People of the Trinity in his Second Letter to the Corinthians in his greeting, he both testifies to the confidence of the Church in the Trinity and relates the Trinity to the good works that should be practiced within the group.
Industrialization and/or Urbanization. We now have technology fields, and higher paying job fields, that seem more interesting or grabs the younger generations attention.
I think it was <span> over who would control appointments of church officials, a conflict which is sometimes called the Investiture Controversy. Hope this was useful :P</span>
