Summary
Highlights
The 1840s and 1850s saw a massive influx of European immigrants, primarily Irish and German. Irish immigrants, mostly Catholic and fleeing the potato famine, settled in northern industrial cities, taking low-wage factory jobs and contributing to the market revolution. They formed ethnic enclaves to preserve their culture. German immigrants, often with more resources due to economic hardship and political instability in Germany, frequently moved westward to establish farms, though some also formed communities in industrial cities, even establishing kindergartens.
The large-scale immigration led to a significant nativist backlash, a movement to protect the interests of native-born citizens. Amid political chaos over slavery, the Know-Nothing Party (officially the American Party) emerged with an anti-immigrant, anti-Catholic platform. They feared Irish Catholics were undermining American institutions and corrupting politics. Despite initial popularity and electoral wins, the party eventually faded and was absorbed into the Republican Party.
By the 1850s, the debate over slavery's expansion dominated American discourse. One major faction was the Free Soil movement, which opposed slavery's expansion into western territories on economic grounds. They believed slave labor threatened free wage labor and viewed the North as progressive with opportunities for advancement, while the South's slave-based economy was seen as backward. Free Soilers were content to leave slavery where it already existed but fiercely opposed its spread, fearing that free states would be outnumbered and the labor system would be suffocated without expansion.
A second faction was the abolitionist movement in the North, which sought to eradicate slavery entirely due to its immorality, not just prevent its expansion. Though a minority, they were highly vocal, using three main tactics. First, moral arguments were presented through figures like Martin Delany, who advocated for black Americans' rights in their birthland, and Harriet Beecher Stowe's influential novel, Uncle Tom's Cabin, which depicted slavery's brutality and became a bestseller, profoundly impacting Northern sentiment.
Second, abolitionists assisted enslaved people in escaping, defying the Fugitive Slave Law. The Underground Railroad, a network of safe houses and conductors, facilitated these escapes, with Harriet Tubman being a key figure, leading many to freedom in Northern states and Canada. Third, some abolitionists resorted to violence. John Brown's raid on Harper's Ferry in 1859, a militant attempt to arm enslaved people and incite rebellion, failed but led to Brown's execution, making him a martyr and further inflaming North-South tensions, as Southerners saw it as proof of Northern willingness to use violence to end slavery.
The third side in the slavery debate argued that it was a "positive good," a position championed by John C. Calhoun. He contended that earlier views of slavery as a 'necessary evil' were mistaken. Calhoun based his argument on white supremacy, asserting that white people were inherently superior and that slavery was a benevolent institution for enslaved blacks who were deemed incapable of self-governance. Additionally, Southerners used constitutional arguments, pointing out that the Constitution protected slavery (e.g., the Three-Fifths Clause) and that the Tenth Amendment reserved powers not explicitly granted to the federal government to the states, meaning individual states had the right to maintain slavery without federal interference.