What is local colorism in American literature?

What is local colorism in American literature?
【正确答案】：A. Mark Twain,Sarah Orne Jewett and Joseph Kirkland are the representatives of local colorists whose writings are concerned with the life of a small,well defined region or province. The characteristic setting is the isolated small town.
B.These local colorists, especially Mark Twain, 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.
C.This particular concern about the local character of a region came about as "local colorism". a unique variation of American literary realism. (p475 )