Nicolas Barreyre is an associate professor in American history at EHESS. In 2015-2016, he is also a faculty fellow at the Warren Center of Harvard University. In his first book, Gold and Freedom (University of Virginia Press, 2015), he explored the spatial dimension of American politics, particularly through the impact of sectionalism on national politics. He proposed a reinterpretation of Reconstruction that includes the main debates on political economy and decentered the narrative towards a truly national frame. Nicolas Barreyre's new research focuses on the organization and the forms of the American State in the 19th century, with an emphasis on the impact of the political economy on the relation between Americans and the State.

Nicolas Barreyre is also a member of the Editorial Board of Annales. Histoire, Sciences Sociales.