The Piedmontese decisively defeat the Papal forces…
September 1860 CE
The Piedmontese decisively defeat the Papal forces army at Casteldifardo, a small town in the Marche region of Italy, allowing them to continue their march into Neapolitan territory, and effectively reducing the Papal States to the territory around Rome.
Rome and its surrounding region, Latium, are to remain under the pope, but the remainder of the Italian peninsula is to become one kingdom under a moderate constitution.