The Missouri Compromise forbids slavery in the Louisiana territory north of Missouri's Southern border. Under its terms, Maine is admitted to the Union as a free state and Missouri as a slave state.
South Carolina announces penalties for introducing any written anti-slavery material into the state.
In Charleston, South Carolina, slaves are required to wear distinctive identification tags. This law is later extended to free blacks in the city as well.
Liberia is founded as a colony for blacks fleeing America.
In South Carolina, Denmark Vesey is accused of organizing a massive slave uprising. Almost forty slaves, including Vesey, are executed. Others are sold out of the state.
Alexander Lucius Twilight graduates from Middlebury College, making him the first black college graduate in the U.S.
Pennsylvania passes an anti-kidnapping law to protect free blacks.
Tennessee officially bans slave trading.
Texas requires that one tenth of the slaves inherited by any estate be freed.
Texas permits slaves to be sold between individuals.