Duchy of Modena and Reggio
Sardinia annexed Lombardy from Austria; it later occupied and annexed the United Provinces of Central Italy, consisting of the Grand Duchy of Tuscany, the Duchy of Parma, the Duchy of Modena and Reggio and the Papal Legations on 22 March 1860. Sardinia handed Savoy and Nice over to France at the Treaty of Turin, a decision that was the consequence of the Plombières Agreement, on 24 March 1860, an event that caused the Niçard exodus, which was the emigration of a quarter of the Niçard Italians to Italy.