Topic Discussion：Write no less than 150 words on each of the following topics in English.Discuss the local color reflected in Mark Twain’s novels.
MARK TWAIN IS KNOWN AS A LOCAL COLORIST, WHO PREFERRED TO PRESENT SOCIAL LIFE THROUGH PORTRAITS OF THE LOCAL CHARACTERS OF HIS REGIONS  , INCLUDING PEOPLE LIVING IN THAT AREA, THE LANDSCAPE, AND OTHER PECULIARITIES LIKE THE CUSTOMS, DIALECTS, COSTUMES AND SO ON. THE RICH MATERIAL OF HIS BOYHOOD EXPERIENCE ON THE MISSISSIPPI VALLEY AND THE WEST BECAME HIS MAJOR THEME . HE WROTE ABOUT THE LOWER-CLASS PEOPLE, AND USED LOCAL COLOR AND HISTORICAL SETTINGS TO ILLUSTRATE，AND SHED LIGHT ON THE CONTEMPORARY SOCIETY .
