Summary
Highlights
Debates over a transcontinental railroad route exacerbated the slavery issue. Stephen A. Douglas secured a northern route with the Kansas-Nebraska Act, which repealed the Missouri Compromise and allowed new territories to decide their slave or free status. This act, signed in 1854, had profound consequences: it destroyed the Whig Party, divided northern Democrats, and spurred the creation of the sectional Republican Party, which quickly gained power in the House of Representatives.
Slavery's expansion westward created significant conflict, as northern workers feared suppressed wages and stolen land, while southerners worried about abolitionist dominance and slave insurrections. The Underground Railroad further fueled disagreements over federal power to return enslaved people. Despite fueling the national economy, differing views on slavery remained central to American politics, eventually leading to fears of federal government control by opposing sections and culminating in bloody warfare after the election of 1860.
In 1850, Henry Clay's grand compromise aimed to address the looming threat of southern secession. Stephen A. Douglas broke it into separate bills, resulting in a series of self-interested victories: a free California for abolitionists and stricter fugitive slave laws for southerners. Though hailed as a success, northern defiance of the Fugitive Slave Act, with some states passing laws against deportation, caused growing alarm in the South, effectively nullifying their perceived victory.
Following the Kansas-Nebraska Act, settlers flooded into the new territories. Missourians swayed the Kansas elections towards slavery, leading free-staters to create a separate constitution. President Pierce supported the pro-slavery legislature, and abolitionist John Brown's violent retaliation against slave-state settlers ignited guerrilla warfare, making 'Bleeding Kansas' a symbol of the sectional controversy. In Congress, Preston Brooks violently assaulted Charles Sumner over slavery, further highlighting the deep divisions.
Ideologies hardened along the Mason-Dixon Line, with northerners championing free labor as central to American democracy and viewing the South as an aristocratic, stagnant society built on slavery. This 'slave power conspiracy' fueled the Republican Party's goal of limiting slavery's spread. In 1857, the Dred Scott v. Sanford decision declared that black people had no claim to citizenship and that Congress could not prohibit slavery in territories, effectively making the Missouri Compromise unconstitutional. This elated southerners but spurred Republicans to threaten to stack the Supreme Court.
The 1858 congressional elections, particularly the Illinois Senate race between Stephen Douglas and Abraham Lincoln, became critical. Lincoln, a lesser-known lawyer, challenged Douglas to debates, attracting national attention. Lincoln argued that denying basic rights to blacks threatened all poor white laborers, and while not an abolitionist, advocated for preventing slavery's spread, believing it would eventually die out. Although Lincoln lost the Senate race, his views gained national traction. John Brown's raid on Harper's Ferry, intended to spark a slave insurrection, further convinced white southerners that they could not safely remain in the Union, fearing widespread northern support for such actions.
The Democratic Party split in the 1860 election over pro-slavery and popular sovereignty candidates. Republicans broadened their appeal, supporting internal improvements and some Whig policies, while firmly opposing the legalization of slavery in territories. They nominated Abraham Lincoln, who, despite only securing 40% of the popular vote, won the electoral college majority due to the divided field. Lincoln's victory was the final signal for many white southerners that their position in the Union was unsustainable, leading to the beginning of political disunion, foreshadowed by works like 'Uncle Tom's Cabin'.