Lesson 3: Dispute Over Slavery

Lesson Focus

Discover how the nation's fragile peace shattered in the 1850s. We'll examine the events, laws, and court decisions that intensified the dispute over slavery, pushing the North and South further apart.

People to Know

Harriet Tubman, Harriet Beecher Stowe, Stephen A. Douglas, Dred Scott

Learning Objectives

• Identify key people, writings, and parties that shaped the 1850s slavery debate.
• Explain the arguments southerners used to defend slavery as a necessary institution.
• Contrast Northern and Southern reactions to the Kansas-Nebraska Act and its popular sovereignty principle.
• Summarize the Dred Scott decision and analyze the furious reactions it provoked nationwide.

To protect their economy and social order, southerners defended the "peculiar institution" of slavery, claiming it was a "positive good."

They passed laws making it hard to free enslaved people and created patrols to catch runaways.

This system gave all white southerners a sense of superiority over Black people, whether free or enslaved, which deeply entrenched racial hierarchy and prevented the South from modernizing its industry. Pay special attention to this justification.

The strict Fugitive Slave Law, part of the Compromise of 1850, angered many Northerners who felt it was deeply unjust.

In response, figures like Harriet Tubman became famous conductors on the Underground Railroad, helping hundreds escape. Meanwhile, Harriet Beecher Stowe's 1852 novel, Uncle Tom's Cabin, exposed slavery's brutality to a wide audience.

These actions dramatically increased antislavery sentiment across the North, turning public opinion against the institution.

The Kansas-Nebraska Act of 1854 aimed to settle the West but ended a long political truce over slavery.

The act introduced popular sovereignty, allowing settlers in the new territories to vote on whether to permit slavery, which repealed the Missouri Compromise.

This led to a violent race as pro-slavery and anti-slavery groups rushed into Kansas to control the vote, resulting in a bloody conflict known as "bleeding Kansas."

The intense conflict over slavery's expansion, especially in Kansas, caused the Whig party to collapse.

A new Republican party formed, based on the "free soil" principle of keeping slavery out of the territories. This appealed to both abolitionists and white farmers.

The presidential election of 1856 revealed a sharp national divide, with the Democrat James Buchanan winning by sweeping the South, while the Republicans dominated the North.

Enslaved man Dred Scott sued for his freedom after his owner took him into a free territory.

In 1857, Chief Justice Roger Taney and the Supreme Court ruled against him, stating that Black people were not citizens and that Congress could not ban slavery in the territories.

This decision infuriated the Republican party, which dismissed it as an obiter dictum (an incidental opinion), while southerners demanded the North obey the ruling, intensifying the national crisis.