This term evolved from several low-budget Western films produced by Italian, German and Spanish companies, by Italian Directors (usually Sergio Leone) and Italians, Spanish or European crews usually on European locations in the 1960s that developed a unique style, and which subsequently came to represent a Sub-Genre of Western known as the Spaghetti Western. One of the most famous example is "Once Upon a Time in America," or the "Dollars" Trilogy starring Clint Eastwood.