"He had already chosen the title of the book, after much thought: The Pacification of the Primitive Tribes of the Lower Niger."
Being the last sentence of the novel, the reader is shown the Western perspective of Nigeria and it's tribes. It also seems that the person acts like he knows all about the tribes, since that they (the white men) is the number one reason why the tribes are in distress. It's interesting that the author had the man say the novel title because he has absolutely no idea what happened to Okonkwo before he committed suicide.
"My god, this man was a womanizer!"