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US History Unit 4: Period 4: 1800–1848

The young nation expanded, its economy industrialized, democracy widened for white men, and reformers pushed to perfect society.

Covers: Jeffersonian democracy, the Louisiana Purchase, the War of 1812, the Market Revolution, the Second Great Awakening and reform, Jacksonian democracy, Indian removal

Study guide

Thomas Jefferson's election in 1800 was a peaceful transfer of power between parties. Jefferson favored limited government and an agrarian republic, yet he doubled the nation's size with the Louisiana Purchase (1803) from France, and Lewis and Clark explored it. Under Chief Justice John Marshall, the Supreme Court strengthened federal power; Marbury v. Madison (1803) established judicial review. Conflict with Britain over trade and impressment led to the War of 1812, which ended in a draw but boosted nationalism and weakened Native resistance after Tecumseh's death. The Monroe Doctrine (1823) warned Europe against new colonization in the Americas.

The Market Revolution transformed the economy. New transportation, including the National Road, the Erie Canal (1825), steamboats and early railroads, linked regions. Factories such as the Lowell textile mills employed young women, and immigration from Ireland and Germany grew. The North industrialized, the South expanded cotton production with enslaved labor after the cotton gin, and the West sold food to both, a pattern Henry Clay's American System tried to encourage with tariffs, a national bank and internal improvements. The Missouri Compromise (1820) temporarily settled conflict over slavery's expansion.

Politics became more democratic as states dropped property requirements for white male voting. Andrew Jackson, elected in 1828, presented himself as a champion of the common man; he used the spoils system, vetoed the Second Bank of the United States, and confronted South Carolina in the Nullification Crisis. His Indian Removal Act (1830) forced Native nations west, including the Cherokee's deadly Trail of Tears, despite Worcester v. Georgia. Opponents formed the Whig Party. The Second Great Awakening inspired reform movements: temperance, abolition (William Lloyd Garrison, Frederick Douglass), public education, asylum reform and women's rights, highlighted by the Seneca Falls Convention (1848).

McCulloch v. Maryland (1819) upheld the national bank and barred states from taxing it. Gibbons v. Ogden (1824) gave Congress broad power over interstate commerce. Both rulings strengthened federal authority over the states. Northern states gradually abolished slavery after the Revolution, and Congress banned the international slave trade in 1808. Meanwhile, a huge domestic slave trade moved enslaved people from the Upper South to new cotton lands. After Nat Turner's revolt (1831), Southern states tightened slave codes, and leaders like John C. Calhoun called slavery a 'positive good.'

As industrialization moved paid work out of the home, middle-class culture assigned women a 'separate sphere' of home and moral guidance, called the cult of domesticity. Women used this moral role to lead reform societies. Exclusion from antislavery work pushed Elizabeth Cady Stanton and Lucretia Mott to demand rights for women. National pride grew after the War of 1812, in the 'Era of Good Feelings.' Noah Webster's dictionary, the Hudson River School painters, and transcendentalist writers like Ralph Waldo Emerson and Henry David Thoreau, who praised individualism and nature, created a distinctly American culture.

The Tariff of 1828 (the 'Tariff of Abominations') helped Northern manufacturers but angered the South. In the 1830 Webster–Hayne debate, Daniel Webster defended an indivisible Union against Robert Hayne's states'-rights position. Calhoun's theory of nullification led to South Carolina's crisis with Jackson.

Key ideas

• The Louisiana Purchase doubled the size of the nation.
• Marbury v. Madison established judicial review.
• The Market Revolution connected regions and spread factory work.
• Voting rights expanded for white men under Jacksonian democracy.
• The Second Great Awakening fueled abolition, temperance and women's rights.

Formulas and rules

Common mistakes

• Thinking Jacksonian democracy expanded voting for everyone; it expanded it mainly for white men.
• Assuming the Supreme Court sided with Jackson on Cherokee removal; Worcester v. Georgia ruled against Georgia.

Words to know

Louisiana Purchase

Jefferson's 1803 purchase of a vast territory from France.

Judicial review

The Supreme Court's power to strike down laws as unconstitutional.

Marbury v. Madison

The 1803 case that established judicial review.

Impressment

Britain forcing American sailors into its navy; a cause of the War of 1812.

Monroe Doctrine

The 1823 warning against European colonization in the Americas.

Market Revolution

The shift to a commercial, connected economy driven by transportation and factories.

Erie Canal

The 1825 canal linking the Great Lakes to New York City.

Lowell mills

Massachusetts textile factories that employed young women.

Cotton gin

Eli Whitney's machine that made cotton profitable and expanded slavery.

American System

Henry Clay's plan of tariffs, a national bank and internal improvements.

Missouri Compromise

The 1820 deal admitting Missouri as a slave state and Maine as free, with a 36°30′ line.

Spoils system

Rewarding political supporters with government jobs.

Nullification Crisis

South Carolina's 1832 attempt to void a federal tariff.

Trail of Tears

The forced removal of the Cherokee to Indian Territory, which killed thousands.

Second Great Awakening

A religious revival that inspired reform movements.

Seneca Falls Convention

The 1848 women's rights meeting that issued the Declaration of Sentiments.

Sample practice questions

5 more questions like these, from level 1 to 5, are in the practice set.