During the 1950s, a number of American historical epics shot in Italy were released. In 1951, MGM producer Sam Zimbalist cleverly used the lower production costs, use of frozen funds and the expertise of the Italian film industry to shoot the large-scale Technicolor epic "Quo Vadis" in Rome. In addition to its fictional account linking the Great Fire of Rome, the Persecution of Christians in the Roman Empire and Emperor Nero, the film - following the novel "Quo vadis" by the Polish writer Henryk Sienkiewicz - featured also a mighty protagonist named Ursus (Italian filmmakers later made several pepla in the 1960s exploiting the Ursus character). MGM also planned "Ben Hur" to be filmed in Italy as early as 1952.