A Nation Divided, c1845–1877 – North and South in c1845: The legacy of the…

The idea

The sectional tensions of c1845 were deeply rooted in historical precedents. The 1820 Missouri Compromise established a fragile geographic boundary (the 36°30' line) for slavery's expansion, temporarily masking underlying divisions. The 1832 Nullification Crisis, sparked by South Carolina's resistance to federal tariffs, cemented the doctrine of states' rights and the threat of secession. Concurrently, Southern fears of modernisation grew as Northern industrialisation, urbanisation, and reform movements threatened their traditional agrarian society. Furthermore, the moving frontier exacerbated these anxieties; as the nation expanded westward, the balance of power in the Senate became a fierce battleground, making every new territory a potential flashpoint for conflict over slavery.

What earns the marks

• Explain how the Missouri Compromise of 1820 attempted to maintain the balance of free and slave states using the 36°30' parallel.
• Analyse the Nullification Crisis of 1832 as a key precedent for states' rights ideology and the constitutional justification for secession.
• Evaluate Southern fears of modernisation, contrasting their traditional, agrarian society with Northern industrial and demographic growth.
• Assess how the moving frontier and westward expansion continually threatened to disrupt the political balance of power in Congress.

Common mistakes and how to put them right

• Confusing the Nullification Crisis with a dispute over slavery.

  Put it right by specifying it was initially about federal tariffs, though it established states' rights precedents.

• Assuming the Missouri Compromise permanently solved the slavery issue.

  Put it right: Clarify that it only provided a temporary geographic fix that later expansion unravelled.

• Viewing the moving frontier solely as an economic opportunity.

  Put it right: Ensure you highlight its political danger in upsetting the Senate balance between free and slave states.

Exam tips

• Link the Nullification Crisis directly to John C. Calhoun and the development of the intellectual framework for later Southern secession.
• Use the Missouri Compromise to demonstrate how early political compromises relied on geography, a strategy that failed as the frontier moved further West.
• When discussing modernisation, contrast Northern population growth, driven by immigration, with Southern stagnation to explain Southern political insecurity.