As Walpole, true to his principles, had purchased peace at home by concession, we find him the next year for the same object keeping entirely aloof from a new war which had broken out in Europe. The Peaces of Seville and Vienna had apparently completed the arrangements of the Treaty of Utrecht, and settled all differences between the courts of Spain and Vienna; but treaties based upon arbitrary territorial arrangements for the purpose of preserving the balance of power are always very liable to be broken. Neither party considers itself quite fairly treated, and is ever on the look-out for some opening to regain its lost power or to acquire some new influence. The Peace of Utrecht had closed the War of Succession, undertaken solely to establish the balance of power in Europe, and had been exactly such a treaty as has been described. The Peaces of Seville and Vienna had been necessary to modify in some degree its arrangements. A quarrel as to the election of a new King of Poland was sufficient to render for the time all three of them useless. It will be remembered that the French King had married the daughter of Stanislaus, ex-King of Poland. All French influence therefore was now employed to secure his re-election, while the Czarina Anne of Russia and the Emperor strongly upheld the claims of Augustus, son of the late King. A Russian and a Saxon army were sufficient to secure the throne for Augustus; but the Emperor's interference, although indirect, had enabled Fleury to show himself in his true colours, to listen to that great section of his countrymen who were weary of the lengthened peace, and to bring on a war which promised to be far more advantageous to France than any success in Poland could have been. In his attack upon Austria he was joined at once by Spain: for the Queen, the real ruler of the Peninsula, was still discontented with the losses Spain had suffered by the late treaties, and was besides very anxious to secure a crown for her son Don Carlos, who was already Duke of Parma. There was a short campaign upon the Rhine, where Berwick commanded the French, Eugene the Imperial army. Though the French lost their general before Philipsburg, they were everywhere successful, and when the united armies of Spain and Sardinia threw themselves on the kingdom of Naples, they found no great difficulty in conquering the Austrians, and completing the conquest of that country and of Sicily by the victory of Bitonto. Don Carlos assumed the kingdom as Charles III. [Sidenote: Definitive Peace of Vienna. Nov. 8, 1738.]