B Westerns are a genre of American films that were popular in the 1930s and 1940s. Oaters is a term used to describe these films, which were usually set in the Old West and featured cowboys and horses. Sergio Leone was an Italian film director who directed several B Westerns, including 'A Fistful of Dollars' and 'The Good, The Bad and The Ugly'. Zane Grey was an American author who wrote many novels about the American West, some of which were adapted into B Westerns.