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AP US History Unit 4 Overview

May 8, 2025

AP US History Unit 4 (1800-1848) Review

Overview

  • This unit covers the period from 1800 to 1848.
  • Main themes:
    • Expanding US role in world affairs.
    • Transformation of society and economy in early republic.
    • Democratic impulses in American society.

Early 1800s Political Landscape

  • Election of Thomas Jefferson in 1800.
  • Fierce debates between Democratic-Republicans and Federalists:
    • American relations with foreign powers.
    • Scope of federal power.

Foreign Affairs

  • Barbary Pirates:

    • Pre-1800s: US paid tribute for protection of merchant ships.
    • Jefferson stopped payments, leading to conflict but resulted in a reduced payment agreement.
  • Louisiana Purchase:

    • Jefferson purchased Louisiana from France for $15 million despite strict constructionist principles.
    • Expanded US territory and influence.
    • Explored by Lewis and Clark; Zebulun Pike mapped southern territory.

Judicial Power

  • Marbury v. Madison (1803):

    • Established judicial review.
    • Strengthened Supreme Court's role as final interpreter of the Constitution.
  • McCulloch v. Maryland (1819):

    • Established principle that federal law trumps state law.

War of 1812

  • Causes: British impressment, trade interference, and British support of Native American resistance.
  • Resulted in increased nationalism and demise of the Federalist Party.
  • Hartford Convention: Federalists opposed the war, considered secession.

Economic and Regional Developments

  • Henry Clay's American System:

    • Internal improvements, protective tariffs, and a second national bank proposed to unify economy.
    • Federal funding for internal improvements vetoed by President Madison.
  • Missouri Compromise (1820):

    • Missouri entered as a slave state, Maine as a free state.
    • Established 36°30′ line for future free/slave state designation.

Territorial Expansion and Foreign Policy

  • Adams-Onís Treaty (1819):

    • Spain ceded Florida to the US and set southern borders.
  • Monroe Doctrine (1823):

    • Declared US opposition to European interference in Western Hemisphere.

Market Revolution

  • Linking of northern industries with western and southern farms.
  • Advancements in technology, communication, transportation:
    • Cotton gin, spinning machine, interchangeable parts.
    • Steamboats and canals (e.g., Erie Canal) improved trade.

Social Changes

  • Immigration:

    • 2 million immigrants (mainly Irish and German) arrived, providing cheap labor.
    • Growth of urban labor class in northern cities.
  • Cult of Domesticity:

    • Women's roles centered around home and family; separate spheres for men and women.

Political Changes

  • Panic of 1819:

    • Led to calls for expanded voting rights; property qualifications reduced or eliminated.
  • Emergence of Political Parties:

    • Democratic Party: Led by Andrew Jackson, strict constructionists.
    • Whigs: Led by Henry Clay, loose constructionists.
  • Tariff of 1828:

    • Led to Nullification Crisis in South Carolina.
    • Jackson's Force Bill to enforce federal tariffs.

Jackson's Presidency

  • Opposed National Bank; vetoed recharter.
  • Indian Removal Act (1830):
    • Forced relocation of Native Americans (e.g., Cherokee Trail of Tears).

Cultural and Social Movements

  • Transcendentalism:

    • Emphasized nature, moral perfection (Ralph Waldo Emerson, Henry David Thoreau).
  • Second Great Awakening:

    • Religious revival; increased social reforms like abolition and temperance.
  • Abolitionism:

    • William Lloyd Garrison's "The Liberator".
    • Opposition from northern merchants and white working class.
  • Women's Rights:

    • Seneca Falls Convention (1848); Declaration of Sentiments.

Southern Society and Slavery

  • Expansion of plantations and slavery with westward expansion.
  • Nat Turner's Rebellion heightened fears of slave revolts.
  • Majority of southern whites were non-slaveholding yeoman farmers.