Martin Luther initiated the Protestant Reformation by challenging the practices of the Catholic Church, leading to the establishment of Protestantism.
Martin Luther was a German monk and professor of Theology at the University of Wittenberg who sparked the Protestant Reformation in 1517 by posting his '95 Theses' challenging the Catholic Church's practices, particularly the sale of indulgences. His actions led to a split from the Catholic Church and the establishment of Protestantism as a new branch of Christianity.
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