Constitutional History / US to 1865, Arizona State University
Source: Studocu compiled essays and notes
Difficulty: Introductory
Prerequisites: Basic familiarity with the US founding period (1770s-1790s) and the structure of the federal government.
This topic sits at the intersection of constitutional law and the history of slavery in the United States. It traces how a document drafted in 1787, which never used the word "slavery," nevertheless shaped the legal and political trajectory that led to abolition in 1865. You should already have a basic grasp of why the Constitution was written, how the amendment process works, and what the Civil War was fought over. If you are coming in cold on any of those, review your founding-era and antebellum notes first.
The US Constitution did not explicitly ban slavery in 1787, but it laid legal groundwork that abolitionists later used to argue against it. Key provisions like the Three-Fifths Compromise, the Northwest Ordinance, and Article VI's supremacy clause all shaped the debate. The Thirteenth Amendment (1865) and Fourteenth Amendment (1868) finally ended slavery and extended citizenship, using the Constitution's own amendment machinery to do so.
Three-Fifths Compromise
The constitutional provision (Article I, Section 2) that counted enslaved persons as three-fifths of a free person for the purposes of congressional apportionment and taxation.
In simple terms, this means enslaved people were partially counted to give slaveholding states more seats in Congress, without granting those people any rights.
Northwest Ordinance of 1787
A federal law that prohibited slavery in the Northwest Territory (the region north of the Ohio River and east of the Mississippi).
Think of it as the first federal-level restriction on where slavery could exist, setting a precedent for future territorial limits.
Article VI (Supremacy Clause)
The constitutional provision establishing that the Constitution, federal laws, and treaties are the supreme law of the land. State laws that conflict with federal law are invalid.
In simple terms, this means no state law can override the Constitution. Abolitionists argued that slavery, being unjust, could not survive under this principle once the Constitution was read as incompatible with human bondage.
Thirteenth Amendment (1865)
The amendment that formally abolished slavery and involuntary servitude throughout the United States, except as punishment for a crime.
Think of it as the constitutional full stop on slavery: after decades of compromise and conflict, this made abolition permanent federal law.
Fourteenth Amendment (1868)
The amendment that granted citizenship to all persons born or naturalised in the United States, including formerly enslaved people, and guaranteed equal protection under the law.
In simple terms, this means the Constitution now recognised formerly enslaved people as full citizens with legal standing, reversing earlier rulings like Dred Scott.
Emancipation Proclamation (1863)
An executive order issued by President Lincoln declaring enslaved people in Confederate states to be free. It did not apply to border states that remained in the Union.
Think of it as a wartime measure, not a constitutional amendment. It freed people in rebel territory and set the political stage for the Thirteenth Amendment, but it did not end slavery everywhere on its own.
The Constitution as drafted in 1787 contained no explicitly anti-slavery language.
It allowed slavery to continue in states that already practised it.
The framers avoided the word "slavery" in the text, using phrases like "other persons" and "person held to service or labour."
The Northwest Ordinance of 1787 prohibited slavery in the Northwest Territory, marking the first federal restriction on slavery's geographic reach.
This covered the area north of the Ohio River and east of the Mississippi River.
It did not affect states where slavery was already legal.
Article VI (the Supremacy Clause) established that the Constitution overrides conflicting state laws, which abolitionists later used to argue that pro-slavery state laws were invalid.
Three-Fifths Compromise (Article I, Section 2)
Counted enslaved people as three-fifths of a person for apportionment and taxation.
Gave slaveholding states disproportionate representation in Congress without giving enslaved people any political rights.
Crucially, it implied that slavery was not considered a permanent feature of the political system, because the framers treated it as a category separate from full personhood.
Fugitive Slave Clause (Article IV, Section 2)
Required that enslaved people who escaped to free states be returned to their owners.
This was one of the concessions to slaveholding states that kept the Union together at the Convention.
Slave Trade Clause (Article I, Section 9)
Barred Congress from prohibiting the importation of enslaved people before 1808.
After 1808, Congress was free to (and did) ban the international slave trade.
The compromise dynamic: the Founding Fathers balanced support for slavery against growing opposition to it. The Constitution neither fully endorsed nor fully condemned the institution, leaving room for future political and legal action.
Civil War era arguments: Union members cited the Constitution to argue that it did not condone slavery and that abolition was constitutionally justified.
Emancipation Proclamation (1863): Lincoln's executive order freed enslaved people in Confederate states. It was a wartime measure and did not amend the Constitution, but it shifted the political landscape toward formal abolition.
Thirteenth Amendment (1865): Formally abolished slavery and involuntary servitude throughout the United States, except as punishment for a crime.
This was the constitutional mechanism that made abolition permanent and nationwide.
It constructed, in the source's words, "a new foundation for the United States."
Fourteenth Amendment (1868): Granted citizenship to all persons born in the US, including those of African descent.
Reversed the legal framework that had excluded Black Americans from citizenship.
Guaranteed equal protection under the law.
Described in the source as "a monumental shift from previously accepted legal principles."
The Constitution's own amendment process was the vehicle for ending slavery: the framers built in a mechanism for change, and abolitionists used it.
The source material notes that the legacy of slavery "still deeply resonates in the United States today."
Systemic racism has created disparities in healthcare, education, and employment, according to a 2017 report from the US Commission on Civil Rights.
Restrictive race-based labour practices, combined with racial discrimination in housing, banking, and employment, have perpetuated inequality well beyond the abolition of slavery itself.
The Constitution's moral legacy also mattered: it inspired generations of activists to push for a more equal nation, using its language of rights and equality as a foundation for civil rights movements.
The Fourteenth Amendment's equal protection clause became the constitutional basis for landmark civil rights litigation in the 20th century.
Students often think the Constitution explicitly condemned slavery. It did not. The original text contained no anti-slavery language and allowed slavery to continue in existing states.
Students sometimes confuse the Northwest Ordinance with a blanket ban on slavery. It only applied to the Northwest Territory, not to the existing slaveholding states.
The Three-Fifths Compromise is frequently misunderstood as a statement that enslaved people were "worth" three-fifths of a person. It was a political formula for apportionment and taxation, not a moral judgement written into the text (though its moral implications were enormous).
The Emancipation Proclamation is often treated as the moment slavery ended. It freed enslaved people only in Confederate states, and it was an executive order, not a constitutional amendment. Slavery was not constitutionally abolished until the Thirteenth Amendment in 1865.
The constitutional framework for abolition is not just historical trivia. The amendment process used to end slavery (Thirteenth and Fourteenth Amendments) is the same process used for every subsequent expansion of rights in the US, from women's suffrage (Nineteenth Amendment) to the abolition of poll taxes (Twenty-Fourth Amendment). Understanding how the Constitution was used to dismantle slavery helps you see how constitutional change works in practice, and why the amendment process matters as a mechanism for social progress.
⚠️ Know the distinction between the Constitution's original text (which tolerated slavery) and the Reconstruction Amendments (which abolished it). Exams frequently test whether students can articulate this shift.
⚠️ Be ready to explain how the Three-Fifths Compromise worked and what it implied about the framers' view of slavery's permanence.
⚠️ The relationship between the Emancipation Proclamation and the Thirteenth Amendment is a common exam question. Know that the Proclamation was a wartime executive order with limited scope, and the Amendment was the permanent constitutional solution.
⚠️ Article VI (Supremacy Clause) and its role in the abolitionist argument is a less obvious but testable point. Understand how abolitionists used it to argue that pro-slavery state laws were unconstitutional.
⚠️ The Fourteenth Amendment's citizenship and equal protection clauses are foundational for later civil rights law. Expect questions connecting 1868 to 20th-century developments.
True or False: The original Constitution explicitly banned slavery in the United States. (False)
The __________ of 1787 prohibited slavery in the territory north of the Ohio River. (Northwest Ordinance)
True or False: The Three-Fifths Compromise counted enslaved people as full persons for congressional representation. (False, they were counted as three-fifths)
The __________ Amendment (1865) formally abolished slavery throughout the United States. (Thirteenth)
True or False: The Emancipation Proclamation ended slavery in all US states. (False, it applied only to Confederate states)
Q: How did the Three-Fifths Compromise reflect the framers' ambivalence about slavery?
A: By counting enslaved people as three-fifths of a person for representation and taxation, the Compromise gave slaveholding states political power from their enslaved populations without treating those populations as full citizens. It implied that slavery was not a permanent fixture of the political system, because the framers treated it as a distinct, partial category rather than fully integrating it.
Q: What was the significance of the Northwest Ordinance of 1787 in the context of slavery?
A: It prohibited slavery in the Northwest Territory, making it the first federal-level restriction on slavery's geographic expansion. While it did not affect existing slaveholding states, it established a precedent for limiting where slavery could operate.
Q: Explain the role of Article VI (the Supremacy Clause) in abolitionist arguments.
A: Article VI states that the Constitution is the supreme law of the land and that conflicting state laws are invalid. Abolitionists argued that because slavery was unjust and unconstitutional, pro-slavery state laws could not stand under this clause.
Q: Why was the Thirteenth Amendment necessary if the Emancipation Proclamation had already been issued?
A: The Emancipation Proclamation was a wartime executive order that applied only to Confederate states. It had no effect on border states, and its legal authority after the war was uncertain. The Thirteenth Amendment provided a permanent, constitutional abolition of slavery across the entire nation.
Q: How did the Fourteenth Amendment build on the Thirteenth?
A: The Thirteenth Amendment abolished slavery, but it did not address the legal status of formerly enslaved people. The Fourteenth Amendment (1868) granted citizenship to all persons born in the US, guaranteed equal protection under the law, and reversed earlier legal principles that had excluded Black Americans from citizenship.
This connects directly to the broader study of Reconstruction (1865-1877), where the Thirteenth, Fourteenth, and Fifteenth Amendments reshaped the legal framework of the United States. If your course covers Reconstruction, these notes give you the constitutional foundation for that period.
The Three-Fifths Compromise and the framers' avoidance of the word "slavery" also connect to topics on constitutional interpretation: how much does original intent matter, and how much does the text's silence on a subject leave room for later readings? This is a thread that runs through constitutional law well beyond the slavery question.
The legacy section ties into 20th-century civil rights history, particularly the use of the Fourteenth Amendment's equal protection clause in cases like Brown v. Board of Education (1954).
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