essay on The Adventures of Huckleberry Finn help

As a way of illustrating his theme, Twain deliberately sets certain events with Huck and Jim on the river and others on the shore. Compare and contrast the major events on the river with those on the shore and develop a supportable thesis for why you think he makes the choices he does. How do these choices subtly reinforce his theme? Back up your thesis with specific quotes and detailed explanations.