The abandonment of Germany by the French at the close of 1813 left the outlying provinces and allies of France exposed to invasion. The Austrian general, Nugent, aided by British naval and military forces, captured Trieste on October 31. Dalmatia had been invaded by the Montenegrins as early as September, 1813, and was afterwards attacked by Austrians and British marines, but the town of Cattaro held out till it was taken by the British in January, 1814. On the 14th of the same month Denmark was compelled by the treaty of Kiel to cede Norway to Sweden in exchange for Swedish Pomerania and Rügen, Sweden undertaking to assist Denmark in procuring a fuller equivalent for Norway at the conclusion of a general peace. A treaty signed between Denmark and Great Britain at the same time and place provided for the restitution to Denmark of all British conquests, with the exception of Heligoland, while Denmark undertook to do all in her power for the abolition of the slave trade. The people of Norway and their governor, Prince Christian of Denmark, refused to submit to the transference of their allegiance, and on February 19 the independence of Norway was proclaimed. At first the Swedish government attempted to obtain the submission of Norway by negotiation only, but so important a diversion of her interest and energies was sufficient to prevent Sweden from joining in the new campaign against France. In Italy on January 11 Napoleon's brother-in-law, Murat, whom he had made King of Naples in 1808, formed an alliance with Austria. The treaty was never confirmed by Great Britain, but the British government subsequently consented to support Murat, if he should loyally exert himself in Italy against Napoleon's forces. Although Murat did actually engage in hostilities against the French, the British were far from satisfied with his operations and considered that his remissness left them a free hand. Accordingly on March 9 a British fleet entered the port of Leghorn and landed 8,000 men, of whom Lord William Bentinck took command. From Leghorn he marched upon Genoa which surrendered to him on April 18.