The 1848 Revolutions in the Italian states, part of the wider Revolutions of 1848 in Europe, were organized revolts in the states of the Italian peninsula and Sicily, led by intellectuals and agitators who desired a liberal government. As Italian nationalists they sought to eliminate reactionary Austrian control. During this time, Italy was not a unified country, and was divided into many states, which, in Northern Italy, were ruled directly or indirectly by the Austrian Empire. A desire to be independent from foreign rule, and the conservative leadership of the Austrians, led Italian revolutionaries to stage revolution in order to drive out the Austrians. The revolution was led by the state of the Kingdom of Sardinia. Some uprisings in the Kingdom of Lombardy–Venetia, particularly in Milan, forced the Austrian General Radetzky to retreat to the Quadrilateral fortresses.

The Papal States, officially the State of the Church, were a conglomeration of territories on the Apennine Peninsula under the direct sovereign rule of the Pope from 756 until 1870. They were among the major states of Italy from the 8th century until the Unification of Italy, between 1859 and 1870.