As for rating the book, it's a classic and pioneering work in the field of African American history and historical scholarship more broadly. Given its meticulous research, insightful analysis, and lasting impact, it would be highly rated by scholars and readers interested in American history, African American studies, and the history of slavery. On a typical rating scale, it would likely receive a 5 out of 5 stars for its significance, depth, and enduring relevance.