Explain why this chapter creates a framework story in the novel

Throughout these chapters a frame work is created that allows us to see the framing of Huck as a person. We learn so much about him here; he assumes different characters and different roles; he's determined that both he and Jim survive. Each role he takes on provides insight into who he is as a person; we see him take on guilt for his own actions, and we see him maturing into a young man who realizes how foolish things can be.

Huck consistently pretends he not as smart or capable than he is. One moment he's floating around on as a mature young man on the river, and the next he's like a little boy. This are the things we see that provide a framework for the picture of Huck.