The Unification of Italy By gloriar35 Apr 10, 1848 kingdom of Piedmont-Sardinia got a liberal constitution adopted a liberal constitution in 1848 Period: Apr 10, 1848 to Nov 18, 1870 important dates of the unification of Italy Feb 11, 1852 Count Camillo di Cavour was named prime minister by the king Jun 14, 1858 Napolean III agreed to help drive out the austrians in the north of italy May 12, 1860 a small army of italian nationalists led by garibaldi captured Sicily Aug 12, 1866 Venice became part of Italy Oct 12, 1870 Rome came under Italian control