Similarities between Twain and Chesnutt

Mark Twain's Huck Finn and Charles Chesnutt's The Goophered Grapevine share similarities in dialect, style, and certain symbols, but the two stories also have differences in setting and content.
In Chesnutt's piece, a black man named Uncle Julius tells the narrator a long, complex story about how the vineyard that the narrator is interested in buying is "goophered" or cursed. Throughout this anecdote, the dialect used is very similar to that which Mark Twain used for Jim in Huck Finn. For example, Jim often utilizes the word "dey" (they) as Uncle Julius also says. In general, the dialects are similar because of how words are chopped off inconsistently at both the beginnings and ends, replaced with an apostrophe to express its shortness. At some points throughout Uncle Julius's story, I found it more difficult to decipher than Twain's style. However, this may just be because Twain's content is more familiar to me than the voodoo practices of the south during this time period.
Another similarity between these two authors, though a small one, is in the ironic symbolism of the unconventional meaning that southern states/towns hold for the main characters in each story. For instance, in Huck Finn, Jim and Huck are actually travelling south down the Mississppi River to the town of Cairo, where Jim can be free. This is ironic because the South during this time period is associated with stricter slave laws. In The Goophered Grapevine, the main protagonish is presented with a similar predicament. His wife is sick and their doctor suggests that they relocate to the South, where the climate is warmer and less harsh. Chesnutt's story takes place after the Civil War, unlike Twain's, but there was still a strong association with the south and stricter black codes, etc. The narrator in Chesnutt's story addresses the concerns of harsh Southern living for blacks when he states, "It was a sufficient amount of time after the war for conditions in the South to have become settled".
While Twain and Chesnutt share these similarities, the time setting is different, as well as the physical setting. They both take place in the South, but Chesnutt writes the couple moving to North Carolina, whereas Huck is bred of Mississippi. Also, Chesnutt makes it a point to express in great detail the practices of Southern voodoo, whereas Twain is satirizing slavery and people in general.