in "the notorious jumping frog of calaveras county" by mark twain, why does twain use dialect when wheeler tells the story

The use of dialect underscores the exaggerated qualities of the characters and separates the narrator from the story.

The dialect intensifies some stereotypes and thereby separates the character from the narrator.

Explanation:

The story of "The Notorious Jumping Frog of Calaveras County" is a Mark Twain's short story in which the narrator speaks about a visit he made to a friend. The reason why Twain decides to use dialect when wheeler tells the story is to emphiseze and exagerate his qualities and to separate the narrator from the story.