Answer:
Reform.
Step-by-step explanation:
The most traumatic era in the entire history of Roman Catholicism, some have argued, was the period from the middle of the 14th century to the middle of the 16th. This was the time when Protestantism, through its definitive break with Roman Catholicism, arose to take its place on the Christian map. It was also the period during which the Roman Catholic Church, as an entity distinct from other “branches” of Christendom, even of Western Christendom, came into being.
Whatever its nonreligious causes may have been, the Protestant Reformation arose within Roman Catholicism; there both its positive accomplishments and its negative effects had their roots. The standing of the church within the political order and the class structure of western Europe was irrevocably altered in the course of the later Middle Ages.