MAPPING THE WEST The Religious Divisions of Europe, c. 1648
The Peace of Westphalia recognized major religious divisions within Europe that have endured for the most part to the present day. Catholicism dominated in southern Europe, Lutheranism had its stronghold in northern Europe, and Calvinism flourished along the Rhine River. In southeastern Europe, the Islamic Ottoman Turks accommodated the Greek Orthodox Christians under their rule but bitterly fought the Catholic Austrian Habsburgs for control of Hungary.