4. Who was Martin Luther?What did he do the impact .The Christian religion/Christianity?(169)

Martin Luther was a German theologian, composer, priest, monk, and a seminal figure in the Protestant Reformation. He is best known for his 95 Theses, which he reportedly nailed to the door of the Castle Church in Wittenberg, Germany, in 1517. The theses criticized the Catholic Church's practice of selling indulgences, which were essentially pardons for sins that could be bought and sold, and called for a return to the biblical foundations of Christianity.Luther's actions and writings had a profound impact on the Christian religion. His challenge to the Catholic Church's authority and his advocacy for a direct relationship between the individual and God without the mediation of the clergy led to the splintering of the Catholic Church and the formation of various Protestant denominations. This movement, known as the Reformation, resulted in significant changes in the religious, political, and social landscape of Europe and had long-lasting effects on the development of Christianity as a whole.