Following the Congress of Vienna (1815), Napoleon’s conquerors organized the European following two principles, respectively that of the balance among powers and that of legitimacy. But the winning countries would prove themselves unable to anticipate the consequences of the dynastic or geostrategic alliances. The most important ‘dissolution forces’ materialized through national and liberal demands. Until ‘the spring of peoples’, these forces manifested themselves most intensely through revolutions and revolutionary conspiracies. The European Risorgimento perfected itself using the classic means of diplomacy and war. The changes of optics finally lead to the formation of the European national states due to the interaction of state people with the profound forces. That is the key through which the formation of some states such as Germany or Italy must be considered, as well as the union of the Romanian Principalities.