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How did the cotton gin and the spread of slavery deepen the divide between North and South?

Analyze the impact of the growth of the cotton industry and the expansion of slavery, including the cotton gin, the spread of plantation slavery, and the differing economies of North and South (GSE SSUSH7, Domain 2).

An EOC-level answer on the cotton economy for the Georgia Milestones US History exam: how the cotton gin made short-staple cotton profitable and entrenched slavery, the spread of the plantation system across the Deep South, the differing economies of an industrializing North and an agricultural South, and the resistance of enslaved people, with worked stimulus and technology-enhanced questions.

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  1. What this topic is asking
  2. The cotton gin and the spread of slavery
  3. Two different economies
  4. The lives and resistance of enslaved people
  5. Try this

What this topic is asking

SSUSH7 explains the economic engine that drove the nation toward civil war: cotton and the expansion of slavery. You need to understand how the cotton gin made cotton wildly profitable and entrenched slavery, how the plantation system spread across the Deep South, and how the South's slave-based agriculture diverged from the North's industrializing free-labor economy. This is the first Domain 2 topic, and it sets up the sectional crisis.

The cotton gin and the spread of slavery

The gin's most important effect was the opposite of what a labor-saving machine might suggest:

Cotton became the country's number-one export, and Southern leaders boasted that "King Cotton" ruled the economy.

Two different economies

These different economies produced different societies and interests, which is why questions about tariffs, slavery, and states' rights so often divide along sectional lines.

The lives and resistance of enslaved people

The cotton economy rested on the forced labor of millions of enslaved African Americans, who endured brutal conditions, family separation, and violence. SSUSH7 expects you to recognize their humanity and resistance: enslaved people preserved family, religion, and culture, slowed or sabotaged work, ran away (some via the Underground Railroad), and at times rebelled (as in Nat Turner's rebellion). This resistance, and the moral argument against slavery, fed the growing abolitionist movement.

Try this

Q1. Explain how the cotton gin affected slavery in the South. [2]

  • Cue. By making short-staple cotton fast to process and highly profitable, it led planters to grow much more cotton across the Deep South and to buy far more enslaved people to work it, so slavery expanded rather than declined.

Q2. Contrast the economies of the North and the South in the early 1800s. [2]

  • Cue. The South had an agricultural economy of cotton plantations worked by enslaved labor; the North industrialized with factories, wage labor, and railroads. The two regions developed different societies and interests.

Exam-style practice questions

Practice questions written in the style of GaDOE exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.

GA Milestones (US History, style)1 marksEli Whitney's cotton gin (1793) had the unintended effect of
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A single-select item (Domain 2, SSUSH7).

Correct answer: greatly increasing the demand for enslaved labor by making cotton highly profitable.

The gin removed seeds from short-staple cotton quickly, so planters grew far more cotton and needed far more enslaved workers to plant and pick it. Markers reward identifying that the gin expanded, rather than reduced, slavery. The trap is assuming a labor-saving machine would reduce the need for workers; instead it made cotton so profitable that slavery spread.

GA Milestones (US History, TE)2 marksDrag each economic feature into the region it best describes: features are (i) factories, wage labor, and railroads, (ii) cotton plantations dependent on enslaved labor; regions are the North and the South.
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A drag-and-drop (technology-enhanced) item (Domain 2, SSUSH7).

Correct matches: factories, wage labor, and railroads to the North; cotton plantations dependent on enslaved labor to the South.

Markers reward connecting the industrializing free-labor economy to the North and the agricultural slave economy to the South. This sectional economic difference is the root of the conflict that builds toward the Civil War. The trap is reversing the two.

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