What is an example of American culture in Huck Finn?!

Probably nothing is more representative of American history/culture in the novel as slavery. It not only contextualizes Jim and his desire to escape, but the contradictions within Huck (he cares for and wants to help Jim but has been conditioned to view Jim as property) are representative of the long, tumultuous battle with the "peculiar institution" that America had from its founding up through the Civil War.