Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Yes, if you can read only one book, read this one.

I agree with the reader below. So I would only add some more recommendations to read: "The world economy. A millennial perspective" by Angus Maddison; "Power and privilege: A theory of social stratification" by Gerhard Emmanuel Lenski; "The History of Government" by S.E. Finer; "World History. A new perspective" by Clive Ponting; and "The Phenomenon of Religion", by Moojan Momen.