Book excerpt: Being considerably different from other regions of the country, most notably regarding its fervent practice of slavery, the land south of the Mason-Dixon line, because of slavery, enjoyed an exceptional prominence in politics, and after the invention of the cotton gin, a high degree of prosperity. However, also because of slavery, it was alienated from the rest of the nation, attempted to secede from the union, and was forced back in only after it lost the Civil War. Numerous cross-referenced entries on prominent individuals, including Thomas Jefferson, Andrew Jackson, Henry Clay, John C. Calhoun, Robert E. Lee, and Abraham Lincoln, as well as others on policies of the time that have since slipped into oblivion are all covered in this book. Economic, social and religious backgrounds trace the seemingly inevitable path to secession, war, and defeat. This reference also includes an introductory essay, a chronology, and a bibliography of the epoch.