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AP U.S. History / Unit 4

Unit 4 · 10–17%

Period 4: 1800–1848

Democracy, markets, expansion, and reform.

Start first lessonUnit practice

Topics

  • Jeffersonian politics
  • Market revolution
  • Westward expansion
  • Reform movements
  • Sectional tension

Lessons

Key terms

Original practice

Marlow Works questions. If this unit does not have its own items yet, you will see other questions from the same course.

1 of 31754–1800 · medium · multiple choice

Which weakness of the Articles of Confederation most directly encouraged support for a new constitution in the 1780s?

Original Marlow Works item — not a College Board question.

Take your time—this is practice, not a test.

Review checklist

  1. 01Connect a transportation or market change to a social change.
  2. 02Explain one reform movement's goal and one limit.
  3. 03Show how expansion raised the slavery question again.

Related resources

External links with reuse status. Marlow Works is independent and does not copy restricted exam or textbook material.

  • Official / link only

    AP U.S. History course page

    Official nine-period framework, skills, and exam updates.

    College Board · All rights reserved · accessed 2026-10-01

    Open source

  • CC BY — attribution required

    U.S. History (Open Textbook Library)

    Open U.S. history textbook for chronology and institutions background.

    Open Textbook Library listing · CC BY · accessed 2026-10-01

    Open source

  • Public domain — verify the item

    Library of Congress — Free to Use and Reuse

    Historical images, maps, and documents. Confirm item-level rights before reuse.

    Library of Congress · Item-level rights statements · accessed 2026-10-01

    Open source