First, the description of this book is incorrect. It covers the period between 1847-1857(starting at the end of the Mexican-American War and ends with the election of Buchanan). This is a very engaging and thorough history of this period. There is a lot on information, but I never was bored. Nevins examines not only the political conflicts brought about by the issue of slavery, but the social, economic, and cultural ones as well.