Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Research has its perks

I was researching treasure hunting old world shipwrecks for my next novel and bought this book. It is such a rich history of the spice trade with its ramifications that I couldn't put it down. The stories, what happened, who we are today, it's a fascinating journey. It explains a lot of what we never thought to connect. Origin of the word factory...a futures market...and then refrigeration spoiled it all..And this is a book about the 16th century.