In Britain, Lord Chief Justice Mansfield rules that English law does not support slavery, thus laying the basis for freeing England’s 15,000 slaves.
The English Society of Friends votes for the expulsion of any member engaged in the slave trade.
Slavery abolished in Madeira.
The Societies of Friends in England and in Pennsylvania in the U.S. require their members to free their slaves or face expulsion.
The Constitution of the State of Vermont prohibits slavery.
The Constitution of Massachusetts declares all men to be free and equal; a judicial decision in 1783 interprets this as meaning that slavery should be abolished.
Rhode Island and Connecticut pass gradual emancipation laws.
The “Society for the Abolition of the Slave Trade” is set up in England.
The Haitian Revolution begins.
The French National Convention abolishes slavery in all French territories. This is repealed by Napoleon in 1802.
New York State passes a gradual emancipation law.
U.S. citizens barred from exporting slaves.
Haiti declares independence from France, and slavery there is abolished.
New Jersey adopts a policy of gradual emancipation.
The Constitution of Haiti provides that any slave arriving in Haiti is automatically both free and a citizen of the country.
England and the United States prohibit their citizens from engaging in the international slave trade.
Gradual emancipation adopted in Argentina.
Gradual emancipation begins in Colombia.
Britain begins to use its naval power to suppress the slave trade.
Slavery abolished in Chile.
Slavery abolished in Central America.
Slavery abolished in Mexico.
Slavery abolished in Bolivia.
Slavery abolished in all British colonies.
The Quintuple Treaty is signed, under which England, France, Russia, Prussia and Austria agree to search vessels on the high seas in order to suppress the slave trade.
Slavery abolished in Uruguay.
Slavery abolished in all French and Danish colonies.
Slavery abolished in Ecuador.
Slavery abolished in Peru and Venezuela.
Slave trade ended in Cuba.
Slavery abolished in all Dutch colonies.
Slavery abolished in the U.S. as a result of the Thirteenth Amendment to the Constitution and the end of the Civil War.
Gradual emancipation initiated in Brazil.
Slavery abolished in Puerto Rico.
Slavery abolished in Cuba.
Slavery abolished in Brazil.