By 1849 the revolutions of 1848 had failed and Italy was still a patchwork of separate states. Real unification only happened between 1849 and 1871 — and it was driven far more by cold calculation than by romantic nationalism.
The key figure was Camillo Benso di Cavour, prime minister of Piedmont-Sardinia from 1852. Cavour was not really a nationalist who dreamed of a united Italy. He was a pragmatist who wanted to expand Piedmont's power, and unification became the by-product of that ambition.
- Modernised Piedmont — Cavour built railways, reformed finances and grew trade, making Piedmont look like the natural leader of Italy.
- Pact of Plombières (1858) — a secret deal with French emperor Napoleon III: France would help Piedmont fight Austria in return for the territories of Nice and Savoy.
- War with Austria (1859) — Piedmont and France defeated Austria, and Piedmont gained Lombardy; central Italian states then voted to join Piedmont in 1860.
- Managing Garibaldi — after Garibaldi conquered southern Italy, Cavour sent Piedmontese troops south to make sure the king, not Garibaldi, took control of the new kingdom.
Cavour's method: Cavour used realpolitik: diplomacy, alliances and a limited war, not popular revolution, to grow Piedmont into 'Italy'.
Giuseppe Garibaldi was the opposite kind of leader — a romantic nationalist and guerrilla fighter who believed in Italy as one nation. In 1860 he led 1,000 volunteers, the 'Redshirts', in a daring invasion of Sicily and then Naples.
Garibaldi's small force defeated the much larger army of the Kingdom of the Two Sicilies, helped by local peasant unrest and Sicilian resentment of Bourbon rule. He then handed his conquests to King Victor Emmanuel II rather than keeping power for himself, allowing the Kingdom of Italy to be proclaimed in 1861.
Cavour's contribution
- Diplomatic skill — secured French military help
- Built Piedmont's economy and army as the springboard
- Political control — turned conquests into a real state
- Cautious, calculating, state-building
Garibaldi's contribution
- Military daring — conquered Sicily and Naples with volunteers
- Inspired popular, grassroots nationalism
- Symbolic unity — gave up power for the national cause
- Bold, romantic, mass-mobilising
The debate to remember: Paper 3 essays often ask 'to what extent was Cavour/Garibaldi/foreign powers most responsible for unification?' There is no single right answer — build a case using evidence for whichever side you argue, then judge which factor mattered most and why.
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Italy could not have unified alone. Austria was the dominant power blocking Italian unity, and only foreign military help let Piedmont challenge it.
France (1859)
Napoleon III sent troops to help Piedmont beat Austria at Magenta and Solferino, gaining Lombardy — in exchange for Nice and Savoy.
France's limits (1860)
Napoleon III made peace with Austria early, worried about Catholic opinion and a war dragging on, leaving Venetia still Austrian.
Prussia (1866)
Prussia's war with Austria let Italy join in as Prussia's ally and finally gain Venetia, even though the Italian army lost its own battles.
Prussia (1870)
The Franco-Prussian War pulled French troops out of Rome, letting Italy seize Rome itself and complete unification.
Italy did not win unification by its own strength alone — it rode the coat-tails of Great Power wars three separate times.
Foreign help was double-edged: France's help was generous but self-interested (Nice, Savoy) and unreliable (early peace in 1859). Italy's unification depended on the timing of other powers' wars, not just its own effort.
Underneath the diplomacy and battles, Italy also had social and economic conditions that made unity possible — and limited.
- Economic growth in the north — Piedmont's railways, industry and trade created wealth and a modernising middle class that backed Cavour's state-building.
- Peasant unrest in the south — poverty, high taxes and land hunger under Bourbon rule meant many southern peasants rose up against their rulers, which Garibaldi's invasion exploited.
- A weak sense of shared nationhood — most Italians spoke regional dialects, not standard Italian, and identified with their town or region, not a nation.
- North-south divide — the wealthier, more industrial north and the poorer, largely agricultural south were unified politically in 1861, but remained economically very unequal.
The peasant reality: When southern peasants rose up in 1860, many were fighting local landlords and taxes, not dreaming of 'Italy'. Once unification happened, heavy taxes and conscription from the new state sparked years of southern rebellion known as brigandage.
This matters for the debate: was unification a genuine popular nationalist movement, or a top-down political project by Piedmont's elite that used popular unrest for its own ends? Most of the evidence points to the second — unification was driven from above, with popular energy (especially Garibaldi's) folded into it rather than leading it.
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Otto von Bismarck became minister-president of Prussia in 1862. Like Cavour, he was not a starry-eyed nationalist — he wanted Prussia to dominate Germany, and unification was the tool for that goal.
'Blood and iron': In an 1862 speech Bismarck declared that Germany's great questions would be decided 'not by speeches and majority votes... but by iron and blood' — meaning military strength and war, not parliamentary debate.
Before any wars, Bismarck relied on Prussia's military reorganization. War Minister Albrecht von Roon and Chief of Staff Helmuth von Moltke expanded and modernised the Prussian army, introducing better rifles (the breech-loading needle gun), efficient rail-based mobilisation, and professional General Staff planning.
| War | Date | Opponent | Outcome |
|---|---|---|---|
| Danish War | 1864 | Denmark (with Austria as ally) | Prussia and Austria seized Schleswig-Holstein from Denmark |
| Austro-Prussian War | 1866 | Austria | Prussia's swift victory at Sadowa/Königgrätz; Austria excluded from Germany |
| Franco-Prussian War | 1870–1871 | France | Prussia and allied German states crushed France; German Empire proclaimed |
Each war served a purpose. The Danish War (1864) gave Prussia and Austria joint territory to later quarrel over. Bismarck then engineered a dispute over that territory to provoke the Austro-Prussian War (1866).
Austria's defeat at Sadowa was crushing and quick, ending the old idea of a 'Greater Germany' led by Austria. Austria was excluded from German affairs for good, and Prussia formed the North German Confederation, uniting the northern German states under its leadership.
Why Austria declined: Austria's army was less modern, its economy weaker, and it was distracted by its multi-ethnic empire and rivalry with Prussia over which state should lead Germany. Its 1866 defeat marked the end of Austrian influence in German affairs.
The final step was the Franco-Prussian War (1870–1871). Bismarck provoked France into declaring war (partly through the edited 'Ems Telegram'), uniting the southern German states with Prussia against a common enemy.
Prussia's superior military organisation crushed France, capturing Emperor Napoleon III himself at the Battle of Sedan. In January 1871, in the Hall of Mirrors at Versailles, King Wilhelm I of Prussia was proclaimed Kaiser (Emperor) of a unified German Empire.