What Event Marked the Beginning of the Protestant Reformation

The Protestant Reformation was initiated by Martin Luther's historic act on October 31, 1517, when he posted his "Ninety-Five Theses" on the door of the Castle Church in Wittenberg, Germany. These theses challenged the Roman Catholic Church's practices, particularly the sale of indulgences, and called for reform. Luther's actions triggered a wave of religious dissent and reformist movements across Europe. This event, often referred to as the "95 Theses," is widely regarded as the catalyst for the Protestant Reformation, which ultimately led to the division of Christianity into various Protestant denominations and transformed the religious landscape of Europe and beyond.