Why 1846, a year that hardly stands out in anyone’s consciousness as a important year in this nation’s history? DeVoto’s answer is that it’s a brief time that determines a long future, a “period when the manifold possibilities of chance were shaped to converge into the inevitable, when the future of the American nation was precipitated out of the possible by the actions of people we deal with.” That’s the essential theme of the book, a concentration on many individuals, depicted in their surroundings, and how their actions would together bring on a civil war.
DeVoto’s book is crowded with memorable people and he constantly tries to show links between them. For example, the quixotic and doomed Brook Farm Utopian experiment of the New England transcendentalists would in a sense find its fulfillment in the remarkable Brigham Young-led Mormon migration which led to the settlement of the Salt Lake basin.
The western expansion led inevitably to conflicts with England and Mexico over ownership of territories. The conflict with England was settled peacefully with the establishment of the 49th parallel as a border, but the conflict with Mexico ended in war, a war which saw most Civil War generals, Grant and Lee being the most notable, getting their first combat experience. And l846 saw the continuing bitter dispute over the issue of slavery in this new “empire”, one that would erupt 14 years later in the Civil War. James Polk, the last of the Whig presidents was in the middle of his term, blundered into the Mexican war, and out of it would come one of the most unfit men ever to be elected president, Zachary Taylor, a war hero, his only qualification. The period also marked the last doomed efforts of Senator John C. Calhoun to hang onto the power of the old South.
DeVoto devotes a lot of space to the hardships of going west. Not all attempts were success, the Donner party epitomizing one of its failures. Francis Parkman’s description of the Oregon Trail struggles is discussed, as is John Fremont’s self-serving adventures in California that led to statehood and his presidential nomination. Kit Carson, Jim Bridger, and now long-forgotten mountain men are given their share of attention.
Abraham Lincoln, early in his career, recognized that the West was creating a domestic empire for the United State, itss “manifest destiny” one that he thought couldn’t be allowed to be balkanized into separate parts.
That leads to DeVoto’s conclusion that all of these individuals were instrumental in building that western empire, but once built externally, it had to solve a central political paradox, the evasion of the Constitution on slavery. The actions of all these men, in different ways, made the West a part of the country, and the disagreements over how it was to be included were part of the growing storm that would drench the country in a little over a decade with the bloodbath of the Civil War