Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great book

I had never read Mari Sandoz so I can't compare this to her other books. The writing style is unique and pleasant. It is a very interesting, and unfortunately sad story about Indian life on the great plains. The book seems very well researched and therefore more interesting to read since it is about history. The Indians suffered strategically from a lack of organization, but their whole life style was about independence and in fact a much more pure form of democracy in selecting and de-selecting their leaders. In reading the story with regard to the lies and deceipt of the white men it reminded me that world politics and war is no different today than then. Crazy Horse had attributes that leaders should aspire to, he wanted to help his people and he was not vain about himself as leader. In the end he was tricked into surrender by his own people.I thought it was one of the best books of Indian life and history that I have read.