Answer:
According to the Jim Crow Museum of Racist Memorabilia at Michigan’s Ferris State University, a white minstrel show actor named Thomas Dartmouth “Daddy” Rice (1808-1860) performed solo skits based on a stereotypical black character named Jim Crow. Rice’s highly exaggerated performance manner was, mostly, based on showing blacks as lazy “darkies” and as natural-born musical talents whose behavior was nonetheless childlike and buffoonish. The name Jim Crow.
Explanation:
I’m bot completely sure, but since there is minimal shadowing, I would say the technique is contouring
The various melodies heard in Antonin Dvořák's "String Quartet in F Major" have a folk-like quality.
There are some instances in this string quartet which are reminiscent of American, Slavonic, and other culture's folk music, meaning music sang and played within the groups of 'ordinary people.' It was written in the pentatonic scale which is common with folk music.