Few people in 1830 believed that there might exist an Italian nation. There were eight several states in the peninsula, each with distinct laws and traditions. No one had had the desire or the resources to revive Napoleon's partial experiment in unification. The settlement of 1814–15 had merely restored regional divisions, with the added disadvantage that the decisive victory of Austria over France temporarily hindered Italians in playing off their former oppressors against each other. Austria now owned Venetia as well as Lombardy, and indirectly controlled the central duchies, Tuscany, Lucca, Modena and Parma; and Austrian forces were at hand to quell the insurrections of Naples and Piedmont in 1821. Italians who, like Foscolo and Rossetti, harboured patriotic sentiments, were driven into exile. The largest Italian state, the Bourbon Kingdom of the Two Sicilies with its eight million inhabitants, seemed aloof and indifferent: Sicily and Naples had once formed part of Spain, and had always been foreign to the rest of Italy. The common people in each region, and even the intellectual élite, spoke their mutually unintelligible dialects and lacked the least vestiges of national consciousness. They wanted good government, not self-government, and had welcomed Napoleon and the French as more equitable and efficient than their native dynasties.

In the forty years after 1830 the peninsula was to be unified under a single government. This risorgimento of Italy did not follow any pre-conceived plan, and many various ideological, political and economic forces aided it, directly or indirectly. A strong movement for economic and governmental reform already existed among the ruling classes of the ancien régime, particularly among the military and civilian officials who had served under the French.