statesman who helped place the new national government on a firm financial footing after the unification of Italy.

Educated for the engineering profession, Sella taught at Turin for several years before entering politics. In 1860 he was elected to the Piedmontese Chamber of Deputies, and in 1862 he briefly served as finance minister of the newly unified Italy. Reappointed finance minister two years later, he found himself forced to deal with a critical budget deficit. His solution, a tax on the milling of grain, was at first resisted, and he himself was forced to resign in 1866, but the grist tax was ultimately adopted by the government in 1868, and, during his third term as finance minister (1869–73), Sella was able to use the tax and other measures to restore the Italian government's finances.

In 1870, after the French garrison had been withdrawn from Rome on account of the demands of the Franco-German War, it was Sella who persuaded King Victor Emmanuel II to seize the city as the national capital.