In which country did the Protestant Reformation begin?

The Protestant Reformation began in Germany in the early 16th century, initiated by Martin Luther. Luther's posting of the 95 Theses in 1517 in Wittenberg is often cited as the starting point of the movement, which challenged the practices and beliefs of the Catholic Church at the time, particularly the sale of indulgences. This movement quickly spread across Europe and led to significant religious, political, and cultural changes. Luther's ideas encouraged others to question the authority of the Catholic Church, leading to the formation of various Protestant denominations. The events of the Reformation in Germany had a profound impact on Christianity and European society as a whole, shaping the course of Western history.