Answer:
His central teachings, that the Bible is the central source of religious authority and that salvation is reached through faith and not deeds, shaped the core of Protestantism. Although Luther was critical of the Catholic Church, he distanced himself from the radical successors who took up his mantle.
Explanation:
The use of slaves was reduced, because immigrants could fulfill the same roles as slaves in factories.
There are several ways in which nationalism, imperialism, and militarism helped set the stage for World War I, but it general it made each European country feel that it was superior to the others.