In September 1814, the rulers of Europe and their ministers descended upon Vienna after two decades of revolution and war. Their task was to redraw continental borders following the collapse of the Napoleonic Empire. Inevitably, all of the major decisions were made by the leading statesmen of the five 'great powers'-Castlereagh, Metternich, Talleyrand, Hardenberg and Tsar Alexander of Russia. The territorial reconstruction of Europe marks only...