By the peace of Westphalia, signed at last on the 24th of October 1648, exactly thirty years and five months since the regents were thrown out of the window at Prague, the religious difficulty in Germany was met by the extension to the Calvinists of all the rights enjoyed by the Lutherans under the religious peace. [Sidenote: =1. Solution of the religious questions.=] The first day of the year 1624 was taken as the test day by which the question of the ecclesiastical lands was to be settled. All that was in Catholic hands on that day was to remain Catholic, all that was in Protestant hands was to remain Protestant. Roughly speaking the line thus laid down was the line which answered to the facts. It preserved the bishoprics of the south, which were avowedly Catholic, to the Catholics; and the secularised lands of the north, such as Bremen and Verden, Halberstadt and Magdeburg, where the Protestants were in a large majority, to Protestantism; and it secured to Catholicism the victories of the Counter-Reformation in the hereditary dominions of Austria, in Bohemia, in Bavaria, and in the upper Palatinate. Finally, the treaty provided for the equal division of the two interests in the imperial court of justice. There was little difficulty in thus finding a satisfactory solution of the questions connected with religion, which had been at the beginning of the war so grave and alarming. [Sidenote: =2. Territorial compensation.=] Both sides had by the process of time become aware that they could not destroy the other, and had learned, if they did not admit, the necessity of toleration. The serious problems for solution were those connected with compensation. Eventually, however, the following arrangements were agreed to. [Illustration: MAP SHOWING THE MARCH OF GUSTAVUS ADOLPHUS, AND THE TERRITORIAL CHANGES EFFECTED BY THE PEACE OF WESTPHALIA.] 1. Maximilian of Bavaria retained the electorate, which was made hereditary in his family, and was permitted to add the upper Palatinate to his duchy of Bavaria. 2. A new electorate was created for Charles Lewis, the eldest son of Frederick, Elector Palatine, and the lower Palatinate was restored to him. 3. Sweden received western Pomerania, including the mouth of the Oder, and the bishoprics of Bremen and Verden, which gave her a commanding strategical and commercial position on the German rivers, and the right of being represented in the German Diet. 4. Brandenburg was compensated for her loss of western Pomerania by the addition of the bishoprics of Halberstadt, Camin, Minden, and the greater part of Magdeburg, to her dominions; and by the confirmation of her inheritance in eastern Pomerania. In addition to this, she now obtained control over the duchies of Cleves, Mark and Ravensberg, which had been apportioned to her by the treaty of Xanten in 1614, but during the war had been occupied by the rival armies of the Spaniards and the Dutch.