Political map of Europe & the Mediterranean 3 December 1859 (Unification of Central Italy): The Second Italian War of Independence (Second Italian War of Independence) was officially ended at Treaty of Zurich (Treaty of Zurich), which gave Lombardy to Sardinia. A further clause insisted on the restoration of the rulers of central Italy but the rebellious central Italian states instead opted to unite under Sardinian rule (United Provinces of Central Italy).