Why did Raskolnikov do it? What explanations does the novel give for the crime Raskolnikov commits, how does it move past them, and how, if at all, does it arrive at a final explanation of the murder?

Why did Raskolnikov do it? What explanations does the novel give for the crime Raskolnikovcommits, how does it move past them, and how, if at all, does it arrive at a final explanation ofthe murder?