North Rhine–Westphalia power. The Peace of Westphalia of 1648, signed in Münster and Osnabrück, ended the Thirty Years' War. The concept of nation-state sovereignty resulting from the treaty became known as "Westphalian sovereignty". As a result of the Protestant Reformation, there is no dominant religion in Westphalia. Roman Catholicism and Lutheranism are on relatively equal footing. Lutheranism is strong in the eastern and northern parts with numerous free churches. Münster and especially Paderborn are thought of as Catholic. Osnabrück is divided almost equally between Catholicism and Protestantism. After the defeat of the Prussian Army at the Battle of Jena-Auerstedt, the Treaty of
History of the Lands of the Bohemian Crown (1526–1648) German territory. Czechs fought on all sides: most of the rebellious Czech generals joined Protestant armies; Albrecht of Wallenstein was the most prominent Czech defector to the imperial cause. Bohemia served as a battlefield throughout the war. Prince Bethlen Gabor's Hungarian forces, reinforced by Turkish mercenaries, fought against the emperor and periodically devastated Slovakia and Moravia. Protestant German armies and, later, Danish and Swedish armies, laid waste the Czech provinces. Cities, villages, and castle fortresses were destroyed. Lusatia was incorporated into Saxony in 1635. In 1648 the Treaty of Westphalia confirmed the incorporation of the Bohemian Kingdom into the Habsburg