Which leader -calvin or luther- do you think had a greater impact? . explain why.

John Calvin was a French theologist who created "Calvinism" in the 16th century. Calvinism is considered as a major branch in Protestantism and was the setting stone for the growth of the Protestant movement in Christianism. Calvinist was among the first groups to break from the Roman Catholic Church during the same century.

Martin Luther King was an American Baptist minister and political activist who was one of the prominent leaders of the Civil Rights Movement. His efforts, characterized by non-violence, led to many reforms regarding equal rights for minorities among the United States.  

Calvin's Impact was greater due to the fact that it directly affected the Status Quo of a global institution such as the Roman Catholic Church. This effort was highly disruptive at the time and eventually made it possible for King to become a Baptist minister many years later.