Calvin Schermerhorn’s provocative study views the development of modern American capitalism through the window of the nineteenth-century interstate slave trade. This eye-opening history follows money and ships as well as enslaved human beings to demonstrate how slavery was a national business supported by far-flung monetary and credit systems. The author details the anatomy of slave supply chains and the chains of credit and commodities that intersected with them in virtually every corner of the pre–Civil War United States, and explores how an institution that destroyed lives and families contributed greatly to the growth of the expanding republic’s capitalist economy.