Firstly, a book review is the evaluation of a book which includes your opinion on the book. Start your review with a brief summary of what the book is about. Mention why the author has written the book and what is trying to be achieved. Then, give your evaluation of the book. What did you think of it? Was there something you found very interesting? Was there something that was explained well or not well? Could the author have explained anything better? Did the book reach its goal, was it effective? This is your review so you must not fear expressing your opinions of the book. But try to back your argument with evidence from the book. Mention, for example, what information was missing. You can also comment on the author's style of writing, use of language, etc.
The Long Bitter Trail by Anthony F.C. Wallace is about the Indian Removal Act of 1830 which forced the Cherokees, Choctaws, Chickasaws, Creeks and Seminoles to relocate. The author discusses US President Andrew Jackson's policy which had tragic consequences for these Indians who had to leave their home. Many Indians died during the forced relocation.