List of historical states of Italy

Following the fall of the Western Roman Empire and the arrival of the Middle Ages (in particular from the 11th century), the Italian Peninsula was divided into numerous states.

The kingdoms of Sicily, Sardinia, Naples (inclusive of the State of Presidi) and the Duchy of Milan were left under the control of Spanish Habsburgs.

Their populations and other vital statistics stood as follows in the late 18th century:[7] Total: 18.3 million Following the defeat of Napoleon's France, the Congress of Vienna (1815) was convened to redraw the European continent.

In Italy, the Congress restored the pre-Napoleonic patchwork of independent governments, either directly ruled or strongly influenced by the prevailing European powers, particularly Austria.

They were universally short-lived, with most of them being reconquered by the Wehrmacht within weeks of their formal establishments and re-incorporated into the Italian Social Republic.