<Li> Britain was represented first by its Foreign Secretary, Viscount Castlereagh; then by the Duke of Wellington, after Castlereagh's return to England in February 1815 . In the last weeks it was headed by the Earl of Clancarty, after Wellington left to face Napoleon during the Hundred Days . </Li> <Li> Tsar Alexander I controlled the Russian delegation which was formally led by the foreign minister, Count Karl Robert Nesselrode . The tsar had two main goals, to gain control of Poland and to promote the peaceful coexistence of European nations . He succeeded in forming the Holy Alliance (1815), based on monarchism and anti-secularism, and formed to combat any threat of revolution or republicanism . </Li> <Li> Prussia was represented by Prince Karl August von Hardenberg, the Chancellor, and the diplomat and scholar Wilhelm von Humboldt . King Frederick William III of Prussia was also in Vienna, playing his role behind the scenes . </Li> <Li> France, the "fifth" power, was represented by its foreign minister, Talleyrand, as well as the Minister Plenipotentiary the Duke of Dalberg . Talleyrand had already negotiated the Treaty of Paris (1814) for Louis XVIII of France; the king, however, distrusted him and was also secretly negotiating with Metternich, by mail . </Li>

What were the goals of the congress of vienna were they successful why or why not