Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent information and very well written

I am currenty writing a book on Okinawan martial arts and felt that a better overview of the history of Okinawa would better enable me to write my own book. There is little to nothing on Okinawan martial arts in this book, but it is an extremely readable book on the history of Okinawa up to the end of WWII. There are also a couple of addtional small sections at the end of the book with corrections and a brief history of Okinawa from the end of WWII to the end of the twentieth century. I learned a lot from this book and found it to be easy to read and easy to understand. I recommend this book to anyone interested in the history of the Orient in general and Okinawa in particular.