The action of Murat had solved the difficulties which the congress had to face in Italy. The kingdom of the Two Sicilies reverted to the Bourbon, Ferdinand; and the Bourbons also acquired a right of reversion in Parma, where the protest of Spain against the rule of Maria Louisa could now be ignored. Genoa was annexed to the kingdom of Sardinia; the pope received back the states of the Church; the Grand Duke of Tuscany and the Duke of Modena were restored; while Austria had to be content with Venetia and Lombardy as far as the Ticino. The organisation of Germany occupied the congress until June, and was the least durable part of its work. The basis of it was a confederation of thirty-eight states, represented and in theory controlled by a diet under the presidency of Austria. This diet naturally resolved itself into a mere permanent congress of diplomatists for the purpose of settling the mutual relations of the constituent states. Each state was ordered to adopt a constitutional form of government, but, as no provision was made for enforcing this clause, it remained a dead letter. Prussia regained her provinces on the left bank of the Rhine, with a population exceeding 1,000,000, and was allotted the northern part of Saxony, with a population of 800,000, besides retaining her original share of Poland, with the province of Posen, which had formed part of the duchy of Warsaw. Most of this duchy was annexed by Russia, but Cracow was left a republic. Prussia also gained Swedish Pomerania. Bavaria, Hanover, and Denmark profited more or less by the repartition of Germany. Denmark, however, finally lost Norway, and Sweden paid the price of this acquisition by resigning Finland to Russia. The neutrality of Switzerland was proclaimed and her constitution simplified. The Belgian Netherlands were united to Holland, the two forming together the kingdom of the Netherlands, to which Austria ceded all her claims in the Low Countries. [Pageheading: _THE SECOND TREATY OF PARIS._] The treaty of Vienna left the boundaries of France itself as they had been defined by the first treaty of Paris in 1814. The second treaty of Paris, however, signed on November 20, 1815, was less favourable to France, which had already ceded Western Savoy to Sardinia, and was now required to abandon Landau and other outlying territories beyond the frontier of 1792. She was also compelled to restore all the works of art accumulated during the war.