During the 1830s, Giuseppe Mazzini had sought to put together a coherent programme for a unitary Italian Republic. He had also formed a secret society called Young Italy for the dissemination of his goals. The failure of revolutionary uprisings both in 1831 and 1848 meant that the mantle now fell on Sardinia-Piedmont under its ruler King Victor Emmanuel II to unify the Italian states through war.
Chief Minister Cavour who led the movement to unify the regions of Italy was neither a revolutionary nor a democrat
Through a tactful diplomatic alliance with France engineered by Cavour, Sardinia-Piedmont succeeded in defeating the Austrian forces in 1859. Apart from regular troops, a large number of armed volunteers under the leadership of Giuseppe Garibaldi joined the fray. In 1860, they marched into South Italy and the Kingdom of the Two Sicilies and succeeded in winning the support of the local peasants in order to drive out the Spanish rulers. In 1861 Victor Emmanuel II was proclaimed king of united Italy