How did martin luther change the world

He gave a speech 'I have a dream'

Explanation:

Luther was one of those figures who touched off something much larger than himself; namely, the Reformation—the sundering of the Church and a fundamental revision of its theology. ... The Reformation, in turn, reshaped Europe. As German-speaking lands asserted their independence from Rome, other forces were unleashed

Explanation:

Martin Luther is one of the most influential figures in Western history. His writings were responsible for fractionalizing the Catholic Church and sparking the Protestant Reformation. ... Although Luther was critical of the Catholic Church, he distanced himself from the radical successors who took up his mantle.

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