The typical team was made up of an Italian director, Italo-Spanish technical staff and a cast of Italian and Spanish actors, sometimes a falling Hollywood star and sometimes a rising one like the young Clint Eastwood in many of Sergio Leone's films. The films were primarily shot in the Andalusia region of Spain in particular the Tabernas Desert of Almería or Sardinia, because they resemble the American Southwest."
http://en.wikipedia.org/wiki/Spaghetti_Western
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"Hannie Caulder is a 1971 Western movie starring Raquel Welch and Robert Culp.
Despite being entirely set in the American West the film was a British production and was filmed, as was common at the time, in Spain mostly around Almeira. A number of notable British actors had roles in this film."
So not guilty.