Overview
The Italian unification, commonly called the Risorgimento, was the long nineteenth-century process by which a patchwork of kingdoms, duchies and principalities on the Italian peninsula were consolidated into a single state. The term in Italian appears as Unità d'Italia. Historians usually trace the political origins to the diplomatic settlement after the Congress of Vienna (1815), which restored pre-Napoleonic rulers and left Italy divided. The movement culminated when Rome became the capital of a unified Kingdom of Italy in 1871, an outcome shaped by both popular action and state diplomacy.
Main phases and methods
Unification combined liberal nationalism, revolutionary agitation, dynastic statecraft and international war. Early decades saw secret societies, political writings and uprisings led by figures such as Giuseppe Mazzini. The revolutions of 1848 produced temporary constitutions and mass mobilization but were largely suppressed. After 1850 the focus shifted to the Piedmontese monarchy, which pursued unification through a mixture of diplomacy and selective military action.
Principal actors
- Count Camillo di Cavour — the Piedmontese prime minister who engineered alliances and negotiated territorial arrangements in the interests of unification; see Cavour and the role of Piedmont in state-building.
- Giuseppe Garibaldi — the popular general and nationalist whose volunteer expedition helped incorporate much of southern Italy; see Garibaldi.
- King Victor Emmanuel II — monarch of Sardinia-Piedmont who became the first king of unified Italy; referenced at Victor Emmanuel II.
- Other influential actors included intellectuals, local elites and foreign powers whose rivalries shaped outcomes; the patchwork of Italian states reacted differently to nationalist pressures.
Key events and timeline
Important milestones included the revolutions of 1848, the Second Italian War of Independence (1859) that weakened Austrian dominance in northern Italy, Garibaldi's 1860 expedition that led to the annexation of the Kingdom of the Two Sicilies, the proclamation of the Kingdom of Italy in 1861, the acquisition of Venetia in 1866 after war with Austria, and the incorporation of Rome in 1870–1871 following the withdrawal of French troops.
Consequences and legacy
Unification produced a modern Italian state but left unresolved problems: striking regional economic disparities, administrative and legal fragmentation, and a tense relationship with the papacy after the loss of the Papal States. Social and cultural integration proceeded unevenly, and large-scale emigration from impoverished regions became a notable consequence. The Risorgimento remains central to Italy's national memory and is studied as a case of nation-building that combined popular movements and elite strategies.



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