Explanation:

The Reformation was a protest against perceived wrong doings by the Catholic Church. The followers of Luther and Calvin became known as Protestants, because of their "protesting." Martin Luther was a German monk who was concerned about the sale of indulgences and other corruptions in the church. In 1517, he wrote his 95 Theses, which were 95 arguments against the sale of indulgences. John Calvin was another priest - turned reformer. Like Luther, he believed that faith in god provided the path to salvation, but he also promoted the idea of predestination.