Final answer:
Martin Luther's teachings regarding salvation differed from those of the Roman Catholic Church in their beliefs about faith, the authority of the Pope, and the existence of Purgatory.
Step-by-step explanation:
Martin Luther’s teachings regarding salvation differed from those of the Roman Catholic Church in several ways. He believed that salvation was achieved through faith alone, while the Catholic Church believed that it was achieved through a combination of faith and good works. Luther also rejected the authority of the Pope, while the Catholic Church considered him to be the head of the Christian Church. In addition, Luther denied the existence of Purgatory, while the Catholic Church believed that it was a place where souls could be purified before entering Heaven.