Thirty Years' War four-year period, the warring parties (the Holy Roman Empire, France, and Sweden) were actively negotiating at Osnabrück and Münster in Westphalia. The end of the war was not brought about by one treaty, but instead by a group of treaties such as the Treaty of Hamburg. On 15 May 1648, the Peace of Münster was signed, ending the Thirty Years' War. Over five months later, on 24 October, the Treaties of Münster and Osnabrück were signed. The war ranks with the worst famines and plagues as the greatest medical catastrophe in modern European history. Lacking good census information, historians have
European wars of religion wars continued to be waged in the post-Westphalian period until the 1710s, and collective memory of the wars lasted even longer. The European wars of religion are also known as the Wars of the Reformation (and Counter-Reformation). The wars were closely connected to the theological disputes within Western Christendom, which erupted after the publication of Martin Luther's "Ninety-five Theses" in 1517. The Protestant Reformation led to a schism within the Catholic Church, as Protestant churches and rulers no longer recognised the authority of the papacy. Although most of the wars ended with the Peace of Westphalia in 1648, religious conflicts