Calculating Value of Union: Slavery, Property Rights, and Economic Origins of Civil War. By James L. Huston. (Chapel Hill: University of North Carolina Press, 2003. Pp. xvii, 394. Illustrations. Cloth, $45.00.)James L. Huston's new study of coming of Civil War is intended to demonstratethat rights in slaves generated sectional conflict, that concentration of valuable rights in one region thwarted any attempt at compromise and undermined genius of democratic process. Southern slaveholders searched for a sanctuary founded on absolute guarantee that all members of Union would view slaves as and agree that no law at any level of government anywhere within Union could directly or indirectly harm value or ownership of that property-the absolute sanctity of rights m Northern resistance to southern demands about rights in African Americans stemmed from a number of sources, but crucial one was economic.Northerners, he concludes, came to oppose because they saw growing system as a ruinous competitor to their system of free village labor (xiv).A casual reader of this thesis statement might wonder what, exactly, is original in it. The short answer is, not much. One finds here an account of 1840s and 1850s with much more in common with those of David Potter and Hermann von Hoist than with more recent ethriocultural school. At least since Abraham Lincoln, and arguably since James Madison, conflict within federal system has been traced to distinction between slave states and free. Huston is aware of this, as his reliance on Potter and rejection of Holt show. So what does he believe to be historiographical contribution of his jaunt through fractious events beginning with Wilmot Proviso and ending in southern secession?Instead of referring to slavery as nub of sectional crisis, Huston points to the right to own slave property. To my mind, this distinction does little to further understanding. What does one glean, for example, from learning that John Brown's raid prompted many southerners' concern for future of their rights in slaves under a Republican government instead of, as he might have thought, concern for future of under a Republican government? Very little, it seems to me.In one characteristic paragraph, Huston states that Kansas-Nebraska debate highlighted property rights in slaves. He then quotes an Alabama senator's reference, in course of arguing for legality of in territories, to constitutional protections of rights. …