What were three obstacles in Chapt. 8-16 in "The Adventures of Huckleberry Finn"? What was the solution and who proposed it?

In Chapter 8, Huck must make the decision of whether of not to help Jim escape. Huck encounters this moral dilemma several times throughout the novel. In fact, the choice between the hypocritical values of society and Huck’s friendship with Jim form the central conflict of the novel.In Chapter 12, we can see the affect the relationship with Jim is having on Huck. As Huck and Jim escape from the steamboat, the Walter Scott, they leave the robbers to die. However, Huck’s conscience begins to bother him, and he decides to find help for them. He finds a watchman on a ferryboat and convinces the watchman that he will get a large reward if he goes checks out the Walter Scott. In Chapter 14, Huck makes the momentous decision to apologize to Jim, a Black man, for playing a cruel joke on Jim and making Jim feel like a fool. But Huck says "I warn't never sorry for it. . ." [the apology]. At this point, Mark Twain stopped writing the book because he had an untenable situation. He had a white boy apologizing to a black man for the first time in American literature. It was three years before Twain started writing the book again, but as you read, you'll notice the novel is much darker and more serious in content as Twain explores the relationship between Jim and Huck and society, itself.