CHAPTER 13 A House Divided, 1840–1861
This chapter concentrates on the events that led to the Civil War. It opens with a vignette demonstrating the
touchiness of southerners about slavery by the 1850s: Mississippi’s Jefferson Davis objected to placing a “liberty
cap” atop the statue planned for the U.S. Capitol’s dome because of the association of such caps with ancient Roman
slaves’ yearning for freedom. The main reason slavery had assumed a central role in the nation’s debate by the
1850s was territorial expansion—what many Americans called their “manifest destiny” to control the continent, a
topic the chapter explores through coverage of Texas independence and annexation, the settlement of Oregon and
California, and, finally, the Mexican War. The war with Mexico, begun in 1846 by President James Polk to acquire
California, was relatively short but controversial because many believed the war would encourage slavery’s
because of the discovery of gold there in early 1848. This gold rush created wealth as well as ethnic conflict. Also,
even before the treaty transferred land to the United States, Rep. David Wilmot (D-Pennsylvania) proposed banning
slavery from territory that might be taken from Mexico. This “Wilmot Proviso” gave rise to the Free Soil Party,
which spread antislavery’s appeal far beyond abolitionists and intensified sectional debate.
The Compromise of 1850 solved the issue of the status of slavery within the Mexican Cession but created new
controversy with a stronger Fugitive Slave Act. The Kansas-Nebraska Act (1854) reopened the sectional divide over
slavery in the territories by overturning the Missouri Compromise’s prohibition on slavery in what were now Kansas
and Nebraska territories. The consequences of the act included political realignment with the collapse of the Whigs,
a brief nativist Know-Nothing movement, and the rise in the North of the Republican Party, based on free labor
ideology. In addition, a short civil war broke out between free soil and proslavery factions in Kansas. The attempt of
the secession of seven slave states and the formation of the Confederate States of America before his inauguration.
The chapter ends with the April 1861 Fort Sumter crisis, which kicked off the Civil War. Who Is an American?
(Primary Source document feature) includes a section of the Dred Scott decision by Chief Justice Roger Taney. Two
Voices of Freedom (Primary Source document feature) entries cover northern white dissent against the Fugitive
Slave Act (1850), and a portion of South Carolina’s Declaration of the Immediate Causes of Secession (1860).