The aerobatics team Patrouille de France performs in Nice, southern France, during a ceremony marking the 150th anniversary of the return of Nice and Savoy to France. To secure an alliance against Austria in the wars of unification of Italy, the prime minister of the kingdom of Sardinia, Camillo Cavour, met in secret with the French emperor Napoleon III on July 21, 1858. The treaty annexing Nice and Savoy to France was signed in Turin, Italy, on March 24, 1860. (Stephane Danna / AFP/Getty Images)