books.google.fr - Tracing the sectionalization of American politics in the 1840s and 1850s, Michael Morrison offers a comprehensive study of how slavery and territorial expansion intersected as causes of the Civil War. Specifically, he argues that the common heritage of th...https://books.google.fr/books/about/Slavery_and_the_American_West.html?hl=fr&id=YTaxzMlkVEMC&utm_source=gb-gplus-shareSlavery and the American West