This book accounts for Scandinavian unification efforts in a time of great upheaval. The ideological repercussions of the European revolutions of 1848-1849 and the Crimean War (1853-1856) transformed both the international political system and nationalism into more 'realist' types. The First Schleswig War (1848-1851) having nearly turned into one of Scandinavian unification, the influence of Scandinavianism extended into the Danish, Swedish and Norwegian courts, cabinets and parliaments, attracting interest from the great powers. The Crimean War offered another window of opportunity for Scandinavian unification, before the Danish-German conflict over the duchies of Schleswig and Holstein nearly united Scandinavia upon the outbreak of the Second Schleswig War in 1864. The ultimate failure of Scandinavianism in its unification efforts was not predetermined, although historiography has made it appear as such. Napoleon III, Cavour and Bismarck all actively contributed to plans for Scandinavian unification, the latter even declaring himself as "very strongly Scandinavian".