Questions and Answers：Give a brief answer to each of the following questions in English.Local colorism is a unique variation of American literary realism. Who is the most famous local colorist? What are local colorists most concerned?
A. MARK TWAIN.
B. LOCAL COLORIST CONCERNED THEMSELVES WITH PRESENTING AND INTERPRETING THE LOCAL CHARACTER OF THEIR REGION. THEIR WRITTINGS ARE CONCERNED WITH THE LIFE OF A SMALL, WELL-DEFINED REGION OR PROVINCE. 
