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How Did the Mexican Cession Trigger a Crisis Over Slavery? - The Compromise of 1850 and the Struggle for Western Territories | Sleepy Facts About History · Sleepy Facts About History

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Welcome to Sleepy Facts About History. In 1848,
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the Treaty of Guadalupe Hidalgo transferred over
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half a million square miles of Mexican territory
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to the United States, creating a massive new
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Western domain. This episode examines how that
0:29
acquisition forced an unresolved constitutional
0:31
contradiction into the center of American politics.
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whether the institution of slavery could expand
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into these newly acquired lands. The existing
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Missouri Compromise Framework collapsed, leading
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to fierce legislative battles over the Wilmot
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Profeso, the admission of California as a free
0:51
state, and the eventual package of legislative
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bargains known as the Compromise of 1850. While
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the episode traces the familiar debates between
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figures like Henry Clay, Daniel Webster, and
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john c calhoun it also focuses on the structural
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impossibility of managing a republic divided
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between free labor and slave property the resulting
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compromises including popular sovereignty and
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a strengthened fugitive slave act did not resolve
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the underlying conflict but merely shifted the
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political balance and radicalized public opinion
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in both the north and the south i kept returning
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to one question while working on this episode
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How could a political system dedicate so much
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effort to compromise, while simultaneously erasing
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the actual people living on the contested lands?
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The territories acquired from Mexico were not
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empty frontier. They contained established Mexican
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communities and indigenous nations, whose sovereignty
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was systematically ignored by American lawmakers
1:56
treating the land as blank space for white settlement.
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Understanding this structural erasure is essential
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to understanding why the Republic could not contain
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the conflict over slavery's expansion. In February
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1848, Mexican officials signed away half a million
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square miles of sovereign territory to the United
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States. These were lands that were already home
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to Mexican towns, Catholic missions, and indigenous
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nations. Their presence would be systematically
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erased by the very political debate the treaty
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unleashed. The question of whether slavery could
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expand into these newly acquired lands was not
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a dispute over empty frontier. It was a crisis
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that exposed the American Republic's inability
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to reconcile territorial expansion with an unresolved
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constitutional contradiction. Every attempted
2:53
solution only sharpened the conflict it was designed
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to contain. In February 1848, a delegation of
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Mexican officials traveled to the village of
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Guadalupe Hidalgo, just outside Mexico City,
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to sign a treaty that ended two years of war
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with the United States. The document they signed
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transferred approximately 525 zero square miles
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of territory to American sovereignty. This was
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an area that would become California, Nevada,
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Utah, and parts of arizona new mexico colorado
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and wyoming to grasp the scale of this transfer
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imagine standing on the banks of the rio grande
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and looking west across desert basins mountain
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ranges and coastal valleys all the way to the
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pacific ocean this was not a blank frontier mexican
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towns catholic missions and ranching estates
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dotted the landscape Indigenous trails and settlements
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marked territories where Apache, Navajo, Pueblo,
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Ute, Comanche, and many other nations had lived
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for generations. What the treaty did not do,
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what it could not do, was resolve the question
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that had already begun to dominate American politics.
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That question was whether slavery could expand
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into these newly acquired lands. This is not
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a story about empty frontier waiting to be settled.
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The Mexican Cession contained established communities
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with their own systems of governance, land tenure,
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and labor relations. Mexican families held land
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grants issued by Spanish and Mexican authorities.
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Indigenous nations exercised sovereignty and
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territorial control that predated both Mexican
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and American claims. Yet in the halls of Congress,
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these lands were debated as if their existing
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inhabitants were merely background to a dispute
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among white Americans over the future of slave
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labor. Understanding how that happened and why
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no political mechanism could contain the conflict
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is the subject of this episode. The question
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of slavery's expansion had been managed uneasily
5:12
by the Missouri Compromise of 1820. That agreement
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had drawn a line at 36 degrees, 30 minutes north
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latitude. It divided the Louisiana Purchase into
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slave territory south of the line and free territory
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north. It was an awkward settlement, but it had
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held for nearly three decades because territorial
5:34
acquisition had been relatively limited. The
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Mexican Cession shattered this framework for
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a simple reason. The Missouri Compromise Line
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did not automatically extend to territory acquired
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from Mexico. Congress would have to make an explicit
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decision about slavery status in the new lands.
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Or it would have to find some new mechanism to
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avoid the question entirely. Even before the
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treaty was signed, that decision had been forced.
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In August 1846, as Congress debated an appropriations
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bill to fund the war with Mexico, Representative
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David Wilmot of Pennsylvania introduced a proviso.
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This was a proposed amendment that would ban
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slavery from any territory acquired from Mexico.
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The Wilmot Proviso was brief and direct. It stated
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simply that neither slavery nor involuntary servitude,
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except as punishment for crime, should exist
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in any territory gained from the Mexican War.
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The proviso passed the House of Representatives
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repeatedly in subsequent sessions. It failed
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in the Senate each time. This pattern revealed
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something crucial. It revealed the sectional
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alignment that would structure all subsequent
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debate. Northern representatives, increasingly
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committed to what they called free labor, supported
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the proviso. Southern senators, defending what
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they understood as the constitutional protection
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of slave property, blocked it. The proviso never
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became law. But its repeated passage and failure
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demonstrated that the old political system, with
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its cross -sectional party alliances, was cracking
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under the pressure of territorial expansion.
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We need to understand what the Wilmot Proviso
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actually represented, because it is often mischaracterized.
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Wilmot himself was a democrat, not an abolitionist.
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The Proviso was not designed to free enslaved
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people in existing slave states. Its purpose
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was to preserve Western territories for white
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free labor. It was meant to preserve those territories
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for independent farmers and workers who would
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not have to compete with, or be degraded by,
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the presence of slave labor. This was the emerging
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ideology of free labor. It was the belief that
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wage labor, economic mobility, and independence
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defined Republican society. It was also the belief
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that the expansion of slavery threatened these
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values by concentrating land and power in the
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hands of a slave -holding aristocracy. Northern
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support for the Proviso was widespread, but it
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was not necessarily egalitarian in motive. Many
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free labor advocates were explicitly racist.
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They sought to exclude black people, enslaved
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and free from Western territories entirely. Southern
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opposition to the Proviso was equally principled.
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from its own perspective. Slaveholders argued
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that enslaved people were property protected
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by the Constitution. They argued that Congress
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could not discriminate against this particular
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form of property in federal territories if the
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federal government could ban slavery from the
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territories. What prevented it from banning other
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forms of property? More practically, slaveholders
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understood that if slavery could not expand,
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the political balance between slave and free
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states would eventually shift against them. The
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South's economic and political power depended
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on maintaining rough equality in the Senate,
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where each state regardless of population received
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two votes. New free states in the West threatened
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that balance. The Wilmot Proviso thus crystallized
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a conflict that was simultaneously constitutional,
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economic, and political. But it also did something
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else. It made explicit the erasure that was occurring
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in the debate. The territories being contested
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were not wilderness. They contained Mexican communities
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with established municipal governments, Catholic
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missions, and ranching economies. They contained
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indigenous nations with their own territorial
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claims and diplomatic relationships. The debate
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over slavery's expansion treated these lands
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as blank space to be filled by white American
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settlement. The treaty that transferred sovereignty
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did little to protect existing inhabitants. The
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Treaty of Guadalupe Hidalgo promised citizenship
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to Mexican residents who did not elect to retain
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Mexican nationality. But it said nothing about
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slavery. And the American legal system that replaced
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Mexican law would not automatically recognize
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Spanish and Mexican land titles. Indigenous sovereignty
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was not acknowledged at all in the treaty's terms.
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By the time the treaty was ratified in March
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1848, the question of slavery in the Mexican
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session was already urgent. And then, in January
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of that same year, a carpenter named James Marshall
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had discovered gold at Sutter's Mill in the Sierra
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Nevada foothills of California. The discovery
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transformed the political calculus almost overnight.
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The California Gold Rush was one of the most
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rapid population movements in American history.
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San Francisco, a small settlement of a few hundred
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people, exploded to tens of thousands within
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months. Ships sailed into the harbor and were
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abandoned as crews deserted for the gold fields.
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Their hulls were left to rot at anchor while
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tent cities and makeshift wooden structures rose
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on the hillsides. Prospects arrived from across
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the United States and around the world. They
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came from China, Chile, Mexico, and Europe. They
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carried picks and pans into river valleys where
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existing communities found their hunting grounds
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and water sources overwhelmed. By late 1849,
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California's population had grown large enough
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to apply for statehood. This created an immediate
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crisis for Congress. California's residents,
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meeting in a constitutional convention in Monterey,
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voted overwhelmingly to prohibit slavery in their
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proposed state constitution. But the question
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of whether Congress would admit California as
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a free state and what would happen to the rest
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of the Mexican session remained deeply contested.
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President Zachary Taylor, a Louisiana slaveholder
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and Mexican war hero, took a position that surprised
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many Southerners. He supported immediate admission
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of California and New Mexico as states. without
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prior territorial organization. This would let
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their residents decide on slavery for themselves.
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This approach would have bypassed the territorial
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stage entirely and potentially resolved the question
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through statehood. But Taylor's plan alienated
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southern leaders who wanted explicit federal
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protection for slave property in the territories.
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It also did not address the status of New Mexico
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and Utah. Those territories remained unorganized.
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and their sparse populations made immediate statehood
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impractical. The situation in New Mexico was
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particularly complex. The territory contained
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substantial Mexican communities with their own
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legal traditions. Its boundaries were disputed
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with Texas, which claimed a vast swath of New
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Mexico east of the Rio Grande. Texas had been
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admitted as a slave state in 1845. Its claims
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threatened to extend slave territory deep into
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the Mexican session. Meanwhile, Utah, settled
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primarily by Mormon pioneers who had arrived
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in 1847, presented its own complications. The
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Mormon community practiced polygamy and maintained
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tight social control. Its relationship with federal
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authority was already strained before the slavery
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question was added. Congress faced a genuine
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dilemma. Admitting California as a free state
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would upset the sectional balance in the Senate,
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where slave and free states had maintained rough
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parity. Organizing New Mexico and Utah as territories
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required some decision about slavery's status.
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The Wilmot Proviso remained blocked in the Senate.
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Popular sentiment in the North was hardening
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against any expansion of slavery. Southern leaders
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were increasingly talking of disunion. if their
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demands were not met. Something had to give,
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but no single solution commanded a majority.
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Into this impasse stepped Henry Clay of Kentucky,
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the veteran senator and architect of previous
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sectional compromises. In January 1850, Clay
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introduced a series of resolutions that would
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become the framework for the compromise of 1850.
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Clay's proposal was not a single bill, but a
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package of measures. It was designed to give
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each section something it wanted while requiring
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each to accept something it opposed. The package
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included several measures. California would be
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admitted as a free state. New Mexico and Utah
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would be organized as territories without explicit
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prohibition or permission of slavery, leaving
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the question to territorial settlers. The Texas
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-New Mexico boundary would be settled in favor
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of New Mexico. with federal assumption of Texas'
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pre -statehood debt as compensation. The slave
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trade, but not slavery itself, would be abolished
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in the District of Columbia, and a stronger federal
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Fugitive Slave Act would facilitate the return
15:49
of escaped slaves from northern states. The debate
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that followed was among the most consequential
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in American congressional history. Clay spoke
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for union and mutual concession. Don C. Calhoun
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of South Carolina, too ill to deliver his own
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speech, had his final address read by a colleague.
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Calhoun denied that Congress had any authority
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to prohibit slavery in the territories. He demanded
16:19
equal protection for slave property, and he warned
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that the South would choose separation if its
16:26
rights were not secured. Daniel Webster of Massachusetts
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delivered his famous 7th of March speech supporting
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the compromise. He declared that he spoke not
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for Massachusetts alone, but for the preservation
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of the Union. William Seward of New York responded
16:43
with a radical counter -argument. He asserted
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a higher law than the Constitution that prohibited
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slavery everywhere. The compromise package initially
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failed. Clay had presented it as an omnibus bill.
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This was a single bill containing all the measures
17:01
together. It required supporters to accept all
17:05
provisions together. This proved impossible.
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Too many legislators were unwilling to vote for
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measures they opposed in order to secure measures
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they favored. The breakthrough came when Stephen
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Douglas of Illinois, chairman of the Senate Committee
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on Territories, broke the omnibus into separate
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bills. He assembled different coalitions for
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each measure. Douglass was a champion of popular
17:31
sovereignty. This was the doctrine that territorial
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settlers rather than Congress should decide on
17:37
slavery. He saw in Clay's framework a way to
17:41
advance this principle while securing other objectives.
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The separate bills passed between August and
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September 1850. President Taylor, who had opposed
17:52
the compromise, died suddenly in July. His successor
17:56
Millard Fillmore signed the measures into law.
18:00
The Compromise of 1850 was thus not a single
18:04
act of Congress, but five separate statutes.
18:07
Each had its own voting pattern and political
18:10
logic. This procedural fact matters for understanding
18:14
what the Compromise actually accomplished. Let
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us examine what each measure did and what it
18:20
implied. California's admission as a free state
18:23
was a clear northern victory, but it permanently
18:27
upset the sectional balance in the Senate. The
18:30
Texas -New Mexico boundary settlement and federal
18:33
assumption of Texas debt resolved a dangerous
18:36
territorial dispute. But the compensation to
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Texas also indirectly benefited slaveholding
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interests by securing Texas's financial stability.
18:47
The organization of New Mexico and Utah territories
18:50
without explicit prohibition of slavery established
18:53
popular sovereignty as the governing principle.
18:57
but the actual meaning of this principle remained
18:59
ambiguous. Did settlers decide at the territorial
19:03
stage, or only when applying for statehood? The
19:07
abolition of the slave trade in the District
19:09
of Columbia was a symbolic northern gain, but
19:13
the preservation of slavery itself in the capital
19:16
was a southern condition, and the Fugitive Slave
19:19
Act was a substantial strengthening of federal
19:22
power on behalf of slaveholders. It required
19:26
northern citizens to assist in the capture and
19:28
return of alleged fugitives. It imposed heavy
19:32
penalties on anyone who aided escapees. The Compromise
19:37
of 1850 has often been presented as a statesmanlike
19:41
settlement that preserved peace for a decade
19:43
before extremists on both sides destroyed it.
19:47
This interpretation misses the structural point.
19:51
The compromise did not resolve the underlying
19:53
question of slavery's status in federal territories.
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It deferred that question through a mechanism,
20:00
popular sovereignty, that would generate new
20:02
conflicts in new places. It also altered the
20:06
political balance in ways that encouraged further
20:09
confrontation. The Fugitive Slave Act was particularly
20:13
consequential in this regard. The Act created
20:16
a system of federal commissioners. who could
20:19
issue certificates for the removal of alleged
20:22
fugitives without jury trial. It required northern
20:26
citizens to assist and capture. It imposed fines
20:30
and imprisonment on anyone who obstructed the
20:33
process. In practice, this meant a federal commissioner
20:37
arriving in a northern town, hearing testimony
20:40
before a hand -picked local jury, and ordering
20:44
bystanders to join a posse to seize a black person.
20:48
accused of being a fugitive. The law brought
20:51
the reality of slavery directly into northern
20:54
communities. Free black people in northern states
20:58
faced the threat of kidnapping and enslavement.
21:01
Commissioners received higher fees for returning
21:04
alleged fugitives than for releasing them. Several
21:07
high -profile cases radicalized northern opinion
21:10
and made a growing number of citizens willing
21:13
to defy federal law. These included the rescue
21:17
of Shattrack Minkins in Boston, the trial of
21:20
Anthony Burns, and the case of Thomas Sims. The
21:24
Fugitive Slave Act also revealed something important
21:27
about the nature of the sectional conflict. Southern
21:31
slaveholders had long argued for states' rights
21:34
and limited federal power. The Fugitive Slave
21:38
Act reversed this position. It asserted sweeping
21:42
federal authority to override northern state
21:45
laws that protected alleged fugitives. The contradiction
21:49
was not lost on contemporaries. The South demanded
21:53
federal power when it served slave -holding interests,
21:56
and resisted federal power when it threatened
21:59
them. This was not hypocrisy in a simple sense.
22:03
It was the logical consequence of a political
22:05
system in which sectional interests had become
22:08
paramount. Meanwhile, popular sovereignty in
22:12
New Mexico and Utah did not produce the peaceful
22:15
resolution its advocates promised. In New Mexico,
22:19
the sparse population and the dominance of Mexican
22:22
residents, who had no interest in slavery, meant
22:25
that the territory effectively remained free
22:27
soil. But this outcome required no democratic
22:31
decision. It reflected demography and geography
22:34
rather than principle. In Utah. The Mormon -dominated
22:39
territorial legislature prohibited slavery in
22:42
1852, but this decision emerged from the particular
22:47
social structure of the Mormon community rather
22:50
than from any general mechanism for resolving
22:52
the slavery question. Neither territory provided
22:55
a model that could be applied elsewhere. The
22:59
apparent success of the Compromise of 1850 in
23:02
temporarily quieting sectional agitation actually
23:05
encouraged the belief that popular sovereignty
23:08
could work as a general solution. Stephen Douglas
23:11
and other Northern Democrats promoted this view.
23:14
They argued that self -government and local democracy
23:18
would resolve what Congressional politics could
23:21
not. This belief led directly to the Kansas -Nebraska
23:25
Act of 1854. That act applied popular sovereignty
23:30
to territory north of the 3630 line. This was
23:35
territory where slavery had been prohibited by
23:38
the Missouri Compromise for more than three decades.
23:41
The repeal of the Missouri Compromise line and
23:45
the violent conflict that followed in Kansas
23:48
between pro -slavery and anti -slavery settlers
23:51
demonstrated what should have been clear. Popular
23:55
sovereignty was not a neutral democratic mechanism.
23:58
It was a way of removing federal prohibition
24:01
and allowing slavery's defenders to compete for
24:04
territorial control. We should pause here to
24:08
consider what was happening to the Mexican and
24:10
indigenous communities whose presence we have
24:12
tried to keep visible. The debate over slavery's
24:16
expansion occurred on lands that the United States
24:18
had acquired through conquest. The political
24:21
settlement that emerged accelerated the dispossession
24:24
of these communities. Mexican land grant holders
24:28
found their titles challenged in American courts
24:31
that did not recognize Spanish and Mexican legal
24:34
documentation. A Mexican family might appear
24:38
before an American judge with land grant papers
24:40
written in Spanish, only to be told that English
24:44
language legal forms were required, or that the
24:47
survey boundaries did not match American standards.
24:50
Many lost their lands through fraud, legal technicality,
24:54
or outright seizure. Even when titles were eventually
24:58
confirmed, years of litigation drained resources
25:02
and forced sales. The California Gold Rush brought
25:06
massive immigration that overwhelmed existing
25:09
communities and destroyed traditional economies.
25:12
Indigenous nations faced intensified military
25:15
campaigns as American settlement expanded. The
25:19
federal government negotiated treaties, many
25:22
of which were subsequently broken, that confined
25:25
native peoples to reservations on a fraction
25:28
of their former territories. The structural erasure
25:32
was not incidental to the slavery debate. It
25:36
was enabled by it. The framework of territorial
25:40
organization assumed that the relevant question
25:43
was what white Americans would do with western
25:45
lands. Mexican and indigenous sovereignty was
25:49
not part of the political calculation. When Congress
25:53
debated whether settlers or legislatures or courts
25:56
would decide on slavery, it was already treating
25:59
the territories as available for white American
26:01
disposal. The competing visions of free labor
26:05
and slave property, however different in their
26:08
implications for black Americans, shared this
26:11
common assumption about whose claims to the land
26:13
mattered. By the early 1850s, The political system
26:18
that had managed sectional conflict through compromise
26:21
was visibly straining. The Whig Party, which
26:25
had provided a cross -sectional alternative,
26:27
was disintegrating as northern and southern wings
26:31
diverged irreconcilably. The Democratic Party
26:35
remained viable longer because of its ability
26:37
to bridge sectional differences through popular
26:40
sovereignty. But this very mechanism was generating
26:43
the conflicts it was supposed to prevent. New
26:46
political formations, the Free Soil Party and
26:50
eventually the Republican Party, emerged to channel
26:53
northern opposition to slavery's expansion into
26:55
electoral politics. The Mexican Cession did not
27:00
simply add land to the United States. It created
27:04
a recurring constitutional and political crisis
27:06
that no existing mechanism could resolve. The
27:10
Wilmot Proviso attempted to resolve the question
27:13
through congressional prohibition. but it could
27:16
not pass the Senate. Popular sovereignty attempted
27:19
to resolve it through local democracy, but it
27:22
merely moved the conflict to the territorial
27:24
level and encouraged violent confrontation. The
27:28
Compromise of 1850 attempted to resolve it through
27:32
a package of mutual concessions, but it deferred
27:36
the central question while creating new mechanisms,
27:38
especially the Fugitive Slave Act and popular
27:41
sovereignty. that radicalized opinion and generated
27:45
new conflicts. Each of these attempted solutions
27:49
shifted the political balance rather than resolving
27:52
the underlying contradiction. The admission of
27:55
California as a free state permanently altered
27:58
the sectional balance in the Senate. This made
28:02
Southern leaders more anxious about future losses.
28:05
The Fugitive Slave Act mobilized Northern opposition
28:08
to slavery in ways that abstract constitutional
28:11
debate had not. Popular sovereignty provided
28:15
a framework that slavery's defenders could use
28:18
to reopen previously closed territories. The
28:21
Compromise of 1850 was not a stable settlement
28:24
ruined by extremists. It was a postponement that
28:29
changed the conditions of future conflict. The
28:32
question of slavery's expansion was not a single
28:35
controversy, but a structural feature of territorial
28:38
acquisition in a republic divided between slave
28:42
and free labor systems. Every new territory reopened
28:46
the question of which labor system and political
28:49
coalition would shape the Republic's future.
28:52
The Missouri Compromise had temporarily contained
28:55
this question for the Louisiana Purchase by drawing
28:59
a geographic line, but the Mexican Cession could
29:02
not be managed by the same method. The line did
29:06
not apply, and the acquisition occurred at a
29:09
moment of intensifying sectional polarization.
29:13
We should be careful not to treat the civil war
29:16
as the inevitable end point of this process.
29:19
The structural pressures were real and growing,
29:22
but contingency remained. Different political
29:24
decisions, different presidential leadership,
29:27
different economic developments might have produced
29:30
different outcomes. What can be said with confidence
29:33
is that the Republic lacked any stable constitutional
29:37
mechanism for resolving the question of slavery's
29:40
expansion. Each attempted solution created new
29:44
pressures rather than relieving old ones. The
29:48
Mexican Cession was the largest single territorial
29:51
acquisition since the Louisiana Purchase. It
29:55
arrived at the moment when the existing political
29:57
system was least capable of absorbing it. The
30:01
territories acquired from Mexico were never empty.
30:04
They contained Mexican communities with established
30:07
systems of governance and land tenure. They contained
30:11
indigenous nations with sovereign territorial
30:13
claims. The political debate over slavery's expansion
30:17
treated these lands as blank space. The settlements
30:21
that emerged accelerated the dispossession of
30:24
their existing inhabitants. The structural crisis
30:28
over slavery's expansion was simultaneously a
30:31
crisis of territorial governance, of constitutional
30:34
interpretation, of political representation.
30:38
and of whose claims to Western lands would be
30:40
recognized by the American state. What remains
30:44
uncertain, and what historians continue to debate,
30:48
is whether any territorial policy could have
30:51
contained the sectional conflict indefinitely.
30:54
The counterfactual question cannot be answered
30:57
with certainty. What would have happened if the
31:00
Wilmot Proviso had passed? What if popular sovereignty
31:04
had been more genuinely democratic? What if the
31:07
compromise of 1850 had taken a different form?
31:11
We can say that the actual policies pursued did
31:14
not resolve the contradiction. We can also say
31:18
that each shifted the political balance in ways
31:21
that encouraged new confrontations. We can also
31:25
say that the compromise of 1850 represented a
31:28
particular moment in the evolution of American
31:30
political institutions. It was a moment when
31:34
legislative bargaining across sectional lines
31:36
was still possible. but becoming increasingly
31:39
difficult. The separate passage of the compromise
31:42
bills, rather than their passage as an omnibus,
31:45
revealed the fragility of cross -sectional coalition.
31:49
The radicalization of northern opinion by the
31:52
Fugitive Slave Act and the mobilization of pro
31:55
-slavery sentiment in response to California's
31:58
admission demonstrated that mutual concession
32:01
was becoming harder to sustain. The Mexican Cession
32:05
forced the United States to confront a question
32:08
that its constitutional framework had left unresolved.
32:12
That question was whether slave property could
32:15
be carried into federal territories and who had
32:17
the authority to decide. The Wilmot Proviso,
32:21
popular sovereignty, and the Compromise of 1850
32:25
were connected attempts to manage this unmanageable
32:28
contradiction. Each represented a different answer
32:32
to the question of who decides. Each answer proved
32:36
inadequate because it could not secure the assent
32:38
of both sections or resolve the underlying conflict
32:42
between free labor and slave properties competing
32:45
visions of American society. What emerges from
32:49
this history is not a story of failed statesmanship
32:52
or extremist sabotage. It was a story of structural
32:56
impossibility. It was the story of a republic
33:00
that had committed itself simultaneously to territorial
33:03
expansion and to maintaining a political balance
33:06
between incompatible labor systems. It possessed
33:10
no mechanism to reconcile these commitments when
33:13
expansion brought them into repeated conflict.
33:16
The Mexican Cession did not cause the Civil War
33:19
in any simple sense, but it created the conditions,
33:23
the territories, the constitutional questions,
33:26
the political alignments, That made the conflict
33:29
over slavery's future impossible to contain through
33:32
the institutions and compromises that had previously
33:35
managed it.