Answer:
Two of the most important reformers in the early 16th century were themselves Catholic priests and trained theologians: Desiderius Erasmus of Rotterdam in Holland, who worked to reform the Roman Catholic Church from within, and Martin Luther in Germany, who eventually broke with it.
Explanation:
Martin Luther is the father of Protestantism. In 1517 he published 95 theses that cuestioned the dogmas of the Roman Catholic Church and some of its practices such as the selling of papal bulls and indulgences. He said that the ultimate authority in religious matters belongs to the Bible and that salvation comes from faith only. Luther started the Reformation that led to the split of Western Christianity.
