After completing the �Man With No Name� trilogy ("The Good, the Bad, and the Ugly," "For a Few Dollars More," "A Fistful of Dollars"), Leone embarked on the definitive Western, a grand summation of the themes and ideas (visual and narrative) that drove an Italian filmmaker to write and direct films in an American-focused genre.
After Italian filmmaker Sergio Leone's success with the Spaghetti Westerns "A Fistful of Dollars," "For a Few Dollars More," and "The Good, the Bad and the Ugly," he wanted to do a few big-budget films in the United States, but not necessarily another Western.
He didn’t want to make another western, having just finished his Dollars trilogy with Clint Eastwood--A Fistful of Dollars (1964), For a Few Dollars More (1965), and The Good, the Bad, and the Ugly (1966)--but U.S. financiers would only give him money if he made another one, so he took their offer and made one of the greatest westerns ever.
Leone's first two "spaghetti Westerns" ("A Fistful of Dollars," " For a Few Dollars More ") were made with small budgets.
Through his Dollars trilogy (A Fistful of Dollars; For a Few Dollars More; The Good, the Bad and the Ugly), he remade the Old West as a gritty, primal and instinctive world filled with anti-heroes, edgy characters and cold-hearted villains, free from the clean-cut moralism that pervaded its American predecessors.