The Protestant Reformation was a widespread theological revolt in Europe against the abuses and totalitarian control of the Roman Catholic Church. Reformers such as Martin Luther in Germany, Ulrich Zwingli in Switzerland, and John Calvin in France protested various unbiblical practices of the Catholic Church and promoted a return to sound biblical doctrine. The precipitating event of the Protestant Reformation is generally considered to be Luther’s posting of his Ninety-five Theses on the door of the Wittenberg Church on October 31, 1517.