Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Undaunted Courage Review

This book was the first novel I read where history was accurately portrait in a compelling, engaging storyline. While some introductory parts where slow to read, I felt as though I was actually on the exploration when Stephen Ambrose took the reader through the harsh winters, indian negotiations, and the real experience of exploring the unknown. The book was thoroughly enjoyable and inspired me to seek out more challenges and face the unknowing with more vigor than ever before. Great book.