--- title: "American Colonization Society — APUSH Definition & Exam Guide" description: "The American Colonization Society (1816) pushed to resettle free Black Americans in Liberia. Learn why it's NOT abolitionism and how APUSH Unit 4 tests it." canonical: "https://fiveable.me/apush/key-terms/american-colonization-society" type: "key-term" subject: "AP US History" unit: "Unit 4" --- # American Colonization Society — APUSH Definition & Exam Guide ## Definition The American Colonization Society (founded 1816) was a reform organization that promoted resettling free African Americans in Africa, leading to the founding of Liberia; it reflected white ambivalence about race rather than true abolitionism, and most free Black Americans rejected it. ## What It Is The American Colonization Society (ACS) was founded in 1816 by a mix of white reformers, politicians, and even some slaveholders who all agreed on one thing: they didn't think free Black people and white people could live together as equals in the United States. Their solution was removal, not equality. The ACS raised money to transport [free African Americans](/apush/key-terms/free-african-americans "fv-autolink") to a colony on the west coast of Africa, which became Liberia in the 1820s. Here's the part [APUSH](/apush "fv-autolink") cares about. The ACS looked like an antislavery organization, but it wasn't one in any meaningful sense. Some supporters genuinely opposed [slavery](/apush/unit-3/movement-early-republic/study-guide/eoL3MkhdlT5xBQVMW6jW "fv-autolink"), while others (especially Southern slaveholders) backed colonization because removing free Black people made slavery *more* stable, not less. Meanwhile, the vast majority of free African Americans rejected colonization outright. They had been born in America, built communities and churches and institutions there, and claimed citizenship in the country they helped create. That rejection pushed many Black leaders, and eventually white radicals like William Lloyd Garrison, toward immediate abolition instead. ## Why It Matters The ACS sits in [Unit 4](/apush/unit-4 "fv-autolink") (American Expansion, 1800-1848), right at the intersection of Topic 4.11 (An Age of Reform) and Topic 4.12 (African Americans in the Early Republic). For APUSH 4.11.A, it's a textbook example of the voluntary reform organizations Americans created in this era (KC-4.1.III.A), but one with a twist, since its 'reform' was racially exclusionary. For APUSH 4.12.A, free Black Americans' rejection of colonization is direct evidence of KC-4.1.II.D: African Americans built communities, protected their dignity, and joined political efforts to change their status, which here meant insisting on belonging in America rather than leaving it. The ACS is also a great tool for the continuity-and-change skill, because it shows that even in the so-called Age of Reform, most white antislavery sentiment stopped well short of [racial equality](/apush/key-terms/racial-equality "fv-autolink"). ## Connections ### [Abolitionist Movement (Unit 4)](/apush/key-terms/abolitionist-movement) Garrison's immediate [abolitionism](/apush/key-terms/abolitionism "fv-autolink") rose partly as a rejection of the ACS. Colonizationists wanted gradual change and Black removal; abolitionists demanded slavery end now, with Black people staying as Americans. Knowing this contrast is the single highest-value thing you can do with the ACS. ### Liberia (Unit 4) Liberia was the ACS's actual product, a colony on the West African coast where the society resettled a relatively small number of free Black Americans starting in the 1820s. It's the concrete outcome you can name in an essay. ### [African-American communities (Unit 4)](/apush/key-terms/african-american-communities) Free Black churches, mutual aid societies, and conventions in the North organized public opposition to colonization. Their argument, that they were Americans with a claim to [citizenship](/apush/key-terms/citizenship "fv-autolink"), is exactly the kind of evidence KC-4.1.II.D wants you to use. ### [Citizenship (Units 4-5)](/apush/key-terms/citizenship) The ACS's core assumption, that Black people could never be full citizens, foreshadows the [Dred Scott decision](/apush/key-terms/dred-scott-decision "fv-autolink")'s denial of Black citizenship in 1857. That's a clean continuity argument stretching from the early republic into the sectional crisis. ## On the AP Exam Multiple-choice questions love testing whether you can tell the ACS apart from genuine abolitionism. A classic stem asks how William Lloyd Garrison's tactics differed from the ACS's approach (immediate, uncompensated emancipation and racial inclusion versus gradual removal). Another common move pairs the ACS with the paradox of the 1820s-1840s, where Northern free Black communities grew even as legal restrictions on them tightened; colonization sentiment is part of that hostile climate. No released FRQ has used the term verbatim, but the ACS is excellent evidence in essays about the limits of antebellum reform (4.11) or continuity and change in African American experiences from 1800 to 1848 (4.12). Just be precise about what it was: don't cite the ACS as an abolitionist organization, because graders will catch that. ## American Colonization Society vs Abolitionism (American Anti-Slavery Society) The ACS and the abolitionist movement both opposed slavery on paper, but their goals were nearly opposite. The ACS wanted to remove free Black people from America gradually, and many of its backers were slaveholders trying to make slavery safer. Abolitionists like Garrison and the American Anti-Slavery Society (1833) demanded immediate emancipation and insisted Black Americans belonged in the United States as equals. Quick test: if the answer choice involves leaving America, it's colonization; if it involves ending slavery now and staying, it's abolitionism. ## Key Takeaways - The American Colonization Society, founded in 1816, aimed to resettle free African Americans in Africa, which led to the founding of Liberia in the 1820s. - The ACS was not an abolitionist organization; many supporters were slaveholders who saw removing free Black people as a way to strengthen slavery. - The vast majority of free African Americans rejected colonization, insisting they were Americans with a claim to citizenship, which supports KC-4.1.II.D. - Free Black opposition to the ACS helped push reformers like William Lloyd Garrison toward immediate abolitionism in the 1830s. - On the exam, the ACS works as evidence for the limits of reform in the Age of Reform and for continuity in racial exclusion from 1800 to 1848. ## FAQs ### What was the American Colonization Society in APUSH? It was an organization founded in 1816 that promoted resettling free African Americans in West Africa, establishing the colony of Liberia in the 1820s. In APUSH it appears in Unit 4, Topics 4.11 and 4.12, as a reform-era organization built on the assumption that Black and white Americans couldn't coexist as equals. ### Was the American Colonization Society abolitionist? No. While some members opposed slavery, the ACS did not call for ending it, and many supporters were slaveholders who wanted free Black people removed to make slavery more secure. Genuine abolitionists like William Lloyd Garrison attacked the ACS for exactly this reason. ### How is the American Colonization Society different from the American Anti-Slavery Society? The ACS (1816) wanted gradual removal of free Black Americans to Africa; the American Anti-Slavery Society (1833), led by Garrison, demanded immediate emancipation with Black Americans remaining in the U.S. as citizens. They represent opposite answers to slavery, removal versus equality. ### Did free African Americans support colonization? Overwhelmingly no. Free Black communities in the North held meetings and published protests arguing they were native-born Americans entitled to citizenship, and only a small number ever emigrated to Liberia. Their resistance is key evidence for African American political efforts under APUSH 4.12.A. ### What was the connection between the American Colonization Society and Liberia? The ACS established Liberia on the West African coast in the 1820s as the destination for resettled free Black Americans. Liberia later became an independent republic in 1847, but the total number of emigrants stayed small compared to the free Black population in the U.S. ## Related Study Guides - [4.11 An Age of Reform](/apush/unit-4/an-age-reform-1800-1848/study-guide/pq1BOhhhmXUke0J5WXkS) ## Structured Data ```json {"@context":"https://schema.org","@graph":[{"@type":"LearningResource","@id":"https://fiveable.me/apush/key-terms/american-colonization-society#resource","name":"American Colonization Society — APUSH Definition & Exam Guide","url":"https://fiveable.me/apush/key-terms/american-colonization-society","learningResourceType":"Concept explainer","educationalLevel":"AP® / High School","about":{"@id":"https://fiveable.me/apush/key-terms/american-colonization-society#term"},"audience":{"@type":"EducationalAudience","educationalRole":"student"},"dateModified":"2026-06-11T00:48:19.412Z","isPartOf":{"@type":"Collection","name":"AP US History Key Terms","url":"https://fiveable.me/apush/key-terms"},"publisher":{"@type":"Organization","name":"Fiveable","url":"https://fiveable.me"}},{"@type":"DefinedTerm","@id":"https://fiveable.me/apush/key-terms/american-colonization-society#term","name":"American Colonization Society","description":"The American Colonization Society (founded 1816) was a reform organization that promoted resettling free African Americans in Africa, leading to the founding of Liberia; it reflected white ambivalence about race rather than true abolitionism, and most free Black Americans rejected it.","url":"https://fiveable.me/apush/key-terms/american-colonization-society","inDefinedTermSet":{"@type":"DefinedTermSet","name":"AP US History Key Terms","url":"https://fiveable.me/apush/key-terms"},"educationalAlignment":[{"@type":"AlignmentObject","alignmentType":"educationalSubject","educationalFramework":"AP® Course and Exam Description","targetName":"APUSH Unit 4, Topic 4.11, LO 4.11.A"},{"@type":"AlignmentObject","alignmentType":"educationalSubject","educationalFramework":"AP® Course and Exam Description","targetName":"APUSH Unit 4, Topic 4.12, LO 4.12.A"}]},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What was the American Colonization Society in APUSH?","acceptedAnswer":{"@type":"Answer","text":"It was an organization founded in 1816 that promoted resettling free African Americans in West Africa, establishing the colony of Liberia in the 1820s. 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