Why did eleven slave states secede from the Union in 1860-61? Why did the eighteen free states loyal to the Union deny the legitimacy of secession, and take concrete steps after Fort Sumter to subdue what President Abraham Lincoln deemed treasonous rebellion?

At the Precipice seeks to answer these and related questions by focusing on the different ways in which Americans, North and South, black and white, understood their interests, rights, and honor during the late antebellum years. Rather than give a narrative account of the crisis, Shearer Davis Bowman takes readers into...