 Complete the following phrase:  Venetian territories with the former Duchy of Mantua and Friuli were annexed to Italy in 1866, five years after the Italian unification and the creation of the Kingdom of Italy under the House of Savoy in 1861. The unification of Veneto with Italy was the result of the Austro-Prussian War, won by the Prussians, Italys allies. In the Italian unification process, the conflict is known as 