Bohemia was the theatre of hostilities during a large part of the Thirty Years' War, which had begun in its capital. In 1631 the Saxons for a time occupied a large part of Bohemia, and even attempted to re-establish Protestantism, During the later period of the Thirty Years' War Bohemia was frequently pillaged by Swedish troops, and the taking of part of Prague by the Swedish general Konigsmark in 1648 was the last event of the great war. The attempts of the Swedish envoys to obtain a certain amount of toleration for the Bohemian Protestants proved fruitless, as the imperial representatives were inflexible on this point. At the beginning of the 18th century the possibility of the extinction of the male line of the house of Habsburg arose. The estates of Bohemia, at a meeting that took place at Prague on the 16th of October 1720, sanctioned the female succession to the Bohemian throne and recognized the so-called Pragmatic Sanction which proclaimed the indivisibility of the Habsburg realm. The archduchess Maria Theresa, in whose favour these enactments were made, none the less met with great opposition on the death of her father the emperor Charles VI. Charles, elector of Bavaria, raised claims to the Bohemian throne and invaded the country with a large army of Bavarian, French and Saxon troops. He occupied Prague, and a large part of the nobles and knights of Bohemia took the oath of allegiance to him (December 19, 1741). The fortune of war, however, changed shortly afterwards. Maria Theresa recovered Bohemia and the other lands that had been under the rule of the house of Habsburg. During the reign of Maria Theresa, and to a greater extent during that of her son Joseph II., many changes in the internal administration of the Habsburg realm took place which all tended to limit yet further the autonomy of Bohemia. A decree of 1749 abolished the separate law-courts that still existed in Bohemia, and a few years later an Austro-Bohemian chancellor was appointed who was to have the control of the administration of Bohemia, as well as of the German domains of the house of Habsburg. The power of the royal officials who constituted the executive government of Bohemia was greatly curtailed, and though the chief representative of the sovereign in Prague continued to bear the ancient title of supreme burgrave, he was instructed to conform in all matters to the orders of the central government of Vienna. Yet more extreme measures tending to centralization were introduced by the emperor Joseph, who refused to be crowned at Prague as king of Bohemia. The powers of the Bohemian diet and of the royal officials at Prague were yet further limited, and the German language was introduced into all the upper schools of Bohemia. Some of the reforms introduced by Joseph were, incidentally and contrary to the wishes of their originator, favourable to the Bohemian nationality. Thus the greater liberty which he granted to the press enabled the Bohemians