Slavery

South Carolina Secession Launches Confederate States Formation to Preserve Slavery as Explicit Constitutional Foundation

| Importance: 10/10

South Carolina adopts an ordinance of secession on December 20, 1860, becoming the first state to withdraw from the United States following Abraham Lincoln’s election. The state’s authorities immediately demand that the U.S. Army abandon federal facilities in Charleston Harbor, …

Jefferson Davis Alexander Stephens South Carolina Confederate States of America James Buchanan secession confederacy slavery constitutional-crisis treason +1 more
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Democratic Party Convention Split Over Slavery Platform Fractures Last National Institution Binding North and South

| Importance: 9/10

The Democratic National Convention convenes in Charleston, South Carolina, with Senator Stephen A. Douglas of Illinois as the front-runner for presidential nomination. Before the convention begins, delegations from seven Deep South states (Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, …

Stephen A. Douglas William Yancey John C. Breckinridge Democratic Party Southern Democrats +1 more democratic-party slavery political-manipulation election-1860 sectional-crisis +1 more
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Prigg v Pennsylvania Supreme Court Ruling Protects Slave Catchers and Enables Kidnapping

| Importance: 9/10

The Supreme Court issues its decision in Prigg v. Pennsylvania, 41 U.S. 539 (1842), with Justice Joseph Story writing for an 8-1 majority that strikes down Pennsylvania’s “personal liberty law” and establishes sweeping protections for slave catchers that enable systematic …

Supreme Court Justice Joseph Story Justice John McLean Edward Prigg Margaret Morgan +1 more fugitive-slave-act supreme-court slavery kidnapping judicial-corruption +1 more
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Amistad Captives Revolt and Win Freedom in Supreme Court, Exposing Slavery's Illegality

| Importance: 8/10

Fifty-three recently abducted Africans being transported aboard the Spanish schooner Amistad from Havana to Puerto Príncipe, Cuba revolt under the leadership of Joseph Cinqué, killing the captain and cook while sparing the Spanish navigator to sail them back to Sierra Leone. The Africans had been …

Joseph Cinqué Amistad captives John Quincy Adams Lewis Tappan U.S. Supreme Court slavery institutional-corruption resistance legal-victory international-law
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Nat Turner Rebellion Triggers Brutal Repression and Tightening of Slave Codes Across the South

| Importance: 9/10

On the night of August 21, 1831, enslaved preacher Nat Turner leads a rebellion in Southampton County, Virginia, that kills between 55 and 65 white people over approximately 48 hours before being suppressed by local militias and federal troops. Turner, deeply religious and literate, interpreted a …

Nat Turner Virginia Legislature Southern state governments Enslaved population White vigilante mobs slavery slave-power state-violence institutional-racism civil-liberties +1 more
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Denmark Vesey Plans Massive Charleston Slave Rebellion, Exposing Institutional Terror

| Importance: 8/10

Denmark Vesey, a free Black carpenter and Methodist leader who purchased his freedom in 1800 after winning a $1,500 lottery, allegedly plans the most extensive slave insurrection in U.S. history, organizing thousands of enslaved and free Blacks in Charleston, South Carolina to overthrow the …

Denmark Vesey African Methodist Episcopal Church Charleston authorities Enslaved conspirators slavery institutional-corruption slave-rebellion state-violence resistance
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Domestic Slave Trade Explodes After Import Ban, Creating Second Middle Passage

| Importance: 9/10

With the federal ban on international slave importation taking effect January 1, 1808, the domestic slave trade within the United States begins a massive expansion that will ultimately transport over one million enslaved people from the Upper South to the Deep South over the next five decades, a …

Slave traders Upper South planters Deep South cotton planters Enslaved people slavery institutional-corruption domestic-slave-trade family-separation forced-migration
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Act Prohibiting Importation of Slaves Signed After Constitutional 20-Year Protection Expires

| Importance: 8/10

President Thomas Jefferson signs into law the Act Prohibiting Importation of Slaves (2 Stat. 426), passed by Congress on March 2, 1807, prohibiting the importation of enslaved people into the United States effective January 1, 1808—the earliest date permitted by the Constitution’s Article I, …

Thomas Jefferson U.S. Congress Joseph Bradley Varnum slave-trade slavery constitutional-deadline federal-legislation
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Thomas Jefferson Wins Presidency Through Three-Fifths Compromise Electoral Advantage

| Importance: 9/10

The Electoral College meets in state capitals on December 3, 1800, and Thomas Jefferson defeats incumbent President John Adams 73 to 65 electoral votes, a victory determined entirely by the extra electoral votes slave states receive through the Three-Fifths Compromise. Without the constitutional …

Thomas Jefferson John Adams Virginia slaveholders Electoral College three-fifths-compromise electoral-manipulation slavery slave-power institutional-corruption
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Gabriel's Rebellion Plans Massive Slave Uprising in Virginia, Exposing System's Fragility

| Importance: 8/10

Gabriel, a 24-year-old enslaved blacksmith from Brookfield plantation in Henrico County, Virginia, plans to lead what may be the most extensive slave rebellion in American history up to that point, with an estimated several thousand participants prepared to seize Richmond, kill white inhabitants …

Gabriel James Monroe Virginia militia Enslaved conspirators slavery institutional-corruption slave-rebellion state-violence resistance
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Slave Trade Act of 1794 Prohibits American Ships from International Slave Trade

| Importance: 6/10

Congress passes and President George Washington signs the Slave Trade Act of 1794, prohibiting American ships from being used in the international slave trade and making it illegal to build, outfit, equip, or dispatch vessels for slave trading purposes. The Act represents an early federal …

U.S. Congress George Washington American ship owners slavery institutional-corruption slave-trade limited-reform
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Cotton Gin Patent Transforms Slavery from Declining Institution to Booming Economic Engine

| Importance: 10/10

Eli Whitney receives a patent for the cotton gin, a machine using rotating brushes and teeth to separate cotton fibers from seeds, revolutionizing the processing of short-staple cotton that grows easily in the Deep South but had been difficult to process profitably. Whitney hopes his invention will …

Eli Whitney Southern planters Enslaved people slavery institutional-corruption economic-transformation cotton-economy technological-exploitation
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Fugitive Slave Act of 1793 Creates Federal Enforcement Apparatus for Slavery

| Importance: 8/10

Congress passes and President George Washington signs the Fugitive Slave Act of 1793, federal legislation enforcing the Constitution’s Fugitive Slave Clause (Article IV, Section 2) by authorizing slaveholders and their agents to pursue freedom seekers across state lines and establishing …

U.S. Congress George Washington Federal judges Slaveholders Freedom seekers slavery institutional-corruption fugitive-slave-act federal-complicity due-process-violation
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Quaker Antislavery Petitions to First Congress Trigger Fierce Debate and Tabling

| Importance: 8/10

Two groups of Quakers enter the House of Representatives in New York and submit petitions calling on the federal government to ban the African slave trade and take steps toward abolishing slavery. The petitions come from three organizations: the Philadelphia and New York Yearly Meetings of the …

Society of Friends (Quakers) Pennsylvania Society for Promoting the Abolition of Slavery Benjamin Franklin James Madison Southern congressmen +1 more slavery abolition-movement congressional-debate petition-rights institutional-corruption +1 more
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Constitution Entrenches Slavery Through Three-Fifths Compromise and Multiple Protections

| Importance: 10/10

The Constitutional Convention concludes its work by approving a Constitution that entrenches slavery through multiple provisions despite deliberately avoiding the word “slave” in the document. The most notorious provision is the Three-Fifths Compromise, proposed by delegate James Wilson …

Constitutional Convention James Wilson Charles Pinckney James Madison Southern slaveholders slavery institutional-corruption constitutional-design electoral-manipulation slave-power
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Electoral College Design Leverages Three-Fifths Compromise to Amplify Slave State Power

| Importance: 9/10

Constitutional Convention delegates finalize the Electoral College system for selecting presidents, resolving months of contentious debate between those favoring congressional selection and those supporting direct popular vote. The compromise creates an indirect election method where each state …

Constitutional Convention delegates James Madison Southern state delegates Committee of Eleven electoral-college three-fifths-compromise slavery institutional-corruption constitutional-design +1 more
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Constitutional Convention Adopts Fugitive Slave Clause Requiring Northern Complicity

| Importance: 9/10

On August 28, 1787, South Carolina delegates Pierce Butler and Charles Pinckney attempt unsuccessfully to include “fugitive slaves” in the Constitution’s extradition clause during Constitutional Convention debates. The following day, August 29, the South Carolina delegation …

Pierce Butler Charles Pinckney James Madison South Carolina delegates Committee of Style fugitive-slave-clause slavery constitutional-design institutional-corruption federal-complicity +1 more
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Constitutional Convention Guarantees 20-Year Protection for International Slave Trade

| Importance: 9/10

The Constitutional Convention’s Committee of Eleven, chaired by William Livingston of New Jersey, recommends prohibiting Congress from banning slave importation until 1808—initially proposing twelve years but extending to twenty years after southern delegates demand more time. This compromise, …

Committee of Eleven William Livingston John Rutledge Charles Pinckney Roger Sherman +2 more slavery slave-trade constitutional-design institutional-corruption slave-power +1 more
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Gouverneur Morris Condemns Slavery as Curse of Heaven at Constitutional Convention

| Importance: 7/10

Gouverneur Morris of Pennsylvania delivers a powerful moral condemnation of slavery during Constitutional Convention debates over representation, attacking the Three-Fifths Compromise and challenging southern delegates who profess little willingness to end slavery in their states. Morris declares …

Gouverneur Morris James Madison Southern state delegates Pennsylvania delegation slavery constitutional-convention moral-opposition three-fifths-compromise slave-power
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Northwest Ordinance Prohibits Slavery While Mandating Fugitive Slave Returns

| Importance: 8/10

The Continental Congress enacts the Northwest Ordinance on July 13, 1787, creating the Northwest Territory and establishing governance procedures for the region between the Great Lakes and the Ohio River (modern Ohio, Indiana, Illinois, Michigan, Wisconsin, and part of Minnesota). Article VI of the …

Continental Congress Nathan Dane Southern state delegates Slaveholders slavery fugitive-slave-clause territorial-expansion institutional-corruption legal-framework +1 more
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Three-Fifths Compromise Gives Slaveholders Massive Extra Political Power

| Importance: 10/10

Delegates at the Constitutional Convention reach agreement on the Three-Fifths Compromise, proposed by James Wilson of Pennsylvania and seconded by Charles Pinckney of South Carolina, establishing that enslaved people will be counted as three-fifths of a person for purposes of congressional …

James Wilson Charles Pinckney Gouverneur Morris James Madison Southern state delegates +1 more three-fifths-compromise slavery institutional-corruption electoral-manipulation constitutional-design +1 more
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Virginia Slave Code of 1705 Consolidates Comprehensive Racial Caste System Into Law

| Importance: 9/10

The Virginia House of Burgesses enacts “An act concerning Servants and Slaves,” a comprehensive 41-section legal code consolidating and strengthening nearly two decades of piecemeal slave legislation into a unified framework that permanently establishes racial slavery as Virginia’s …

Virginia House of Burgesses Virginia Colony Slaveholders slavery institutional-corruption slave-codes legal-framework racial-caste
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Bacon's Rebellion Unites Poor Whites and Blacks, Triggering Elite Shift Toward Racial Slavery

| Importance: 9/10

An armed rebellion led by Nathaniel Bacon against Virginia Governor William Berkeley reaches its peak when Bacon’s militia of thousands captures and burns Jamestown to the ground on September 19. The rebellion, triggered by Berkeley’s refusal to authorize attacks on Native American …

Nathaniel Bacon William Berkeley Virginia planters Indentured servants Enslaved Africans slavery institutional-corruption class-conflict racial-division elite-strategy
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Virginia Enacts Partus Sequitur Ventrem Making Slavery Hereditary Through Mothers

| Importance: 9/10

The Virginia House of Burgesses enacts a law establishing that “all children borne in this country shalbe held bond or free only according to the condition of the mother,” implementing the Roman legal doctrine of partus sequitur ventrem (literally “that which is born follows the …

Virginia House of Burgesses Virginia Colony Slaveholders slavery institutional-corruption slave-codes legal-framework generational-bondage
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First Enslaved Africans Arrive in Virginia, Beginning Atlantic Slave Trade in British North America

| Importance: 9/10

The English privateer ship White Lion arrives at Point Comfort in Hampton, Virginia in late August carrying “twenty and odd” captive Africans originally from modern-day Angola. According to a letter by colony secretary John Rolfe, Governor Sir George Yeardley and head merchant Abraham …

Virginia Colony Sir George Yeardley Abraham Peirsey White Lion privateers Enslaved Angolans slavery institutional-corruption atlantic-slave-trade colonial-economy labor-exploitation
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