Book excerpt: Most US historians assume that capitalism either “came in the first ships” or was the inevitable result of the expansion of the market. Unable to analyze the dynamics of specific forms of social labour in the antebellum US, most historians of the US Civil War have privileged autonomous political and ideological factors, ignoring the deep social roots of the conflict. This book applies theoretical insights derived from the debates on the transition to capitalism in Europe to the historical literature on the US to produce a new analysis of the origins of capitalism in the US, and the social roots of the Civil War. Winner of the Paul Sweezy Marxist Sociology Book Award 2013 Short-listed for the 2011 Isaac and Tamara Deutscher Memorial Prize.