AP US History Unit 5 Cheatsheet: Civil War and Reconstruction, 1848-1877

Start with the first 2 sections of the Unit 5 one-page cheatsheet below. The full sheet is a PDF you can print.

5.1–5.4 Expansion → Sectional Crisis

Context + Manifest Destiny

Expansion intensified the unresolved question: would slavery expand west? Settlers sought land, minerals, economic opportunity, and religious refuge.
Manifest Destiny claimed U.S. institutions justified continental expansion; it produced war, Native displacement, and conflict over citizenship and labor systems.
Oregon boundary settled diplomatically; Texas annexation and the disputed border helped cause the Mexican–American War (1846–48).
Victory brought the Mexican Cession; the Wilmot Proviso failed but exposed sectional division. The Treaty of Guadalupe Hidalgo reshaped life for Mexicans and Native peoples in annexed lands.

Compromise of 1850

California free; Utah/New Mexico used popular sovereignty; Texas boundary settled; slave trade ended in D.C.; stronger Fugitive Slave Act.
Temporarily reduced tension but forced Northerners to participate in slavery and energized resistance.

Territorial gain → slavery-extension debate → failed compromises → sectional parties → secession

Groups + Goals: Use the Precise Claim

Group	Central goal in this period
Free-soilers	Block slavery’s western expansion to protect free-labor opportunity; not all demanded immediate abolition.
Abolitionists	End slavery through moral pressure, political action, escape assistance, and sometimes direct resistance.
Republicans	Oppose slavery’s extension; preserve Union; wartime policy moves toward emancipation.
Southern slaveholders	Protect slavery, property claims, and political power through federal protection or secession.
Freedpeople	Pursue family autonomy, education, land, citizenship, voting, and public leadership.
Women’s-rights activists	Pursue political equality; divide over constitutional amendments that enfranchised Black men first.

Nuance earns points: avoid treating “the North,” “the South,” or reform movements as internally uniform.

The rest of the Unit 5 sheet

5 more sections are on the one-page PDF:

5.5–5.7 Why Compromise Failed
Period 5 Timeline
5.8–5.9 Civil War: Victory + Transformation
5.10–5.11 Reconstruction: Gains + Retreat
5.12 Writing the Unit

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