Book Review: The Interbellum Constitution: Union, Commerce, and Slavery in the Age of Federalisms by Alison L. LaCroix LaCroixAlison L., The Interbellum Constitution: Union, Commerce, and Slavery in the Age of Federalisms. New Haven, CT: Yale University Press, 2024. viii + 562 pp., illustrations, notes, bibliography, index. ISBN 978-0-3002-2321-7, US$45 (hbk).