 
New York City hosts the first National Anti-Slavery Society Convention.
1837
New York City hosts the first Convention of the Anti-Slavery Society of American Women, an event attended by both black and white women.
1837
Blacks in Pennsylvania and Mississippi lose the right to vote. In New York, they petition for continued voting rights.
1838
The second Anti-Slavery Convention of American Women takes place in Philadelphia, Pennsylvania. Proslavery mobs riot in response.
1839
In Albany, New York, a committed political action group called the Liberty Party holds its first National Convention in the name of abolition.
1839
Africans aboard the Spanish slave ship Amistad commit mutiny. When the ship lands off the coast of Long Island, the slaves plea for freedom in court.
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1840
The American Anti-Slavery Society divides over the issue of women's rights.
1840
Texas forbids unauthorized trading with slaves and prohibits slaves from carrying weapons without written permission.
1840
South Carolina enacts a "Black Code" by which slaves are denied the rights to assemble, produce food, earn money, learn to read, and to possess any clothing but low-quality garments.
1841
The U.S. Supreme Court declares that the mutinous Africans from the slave ship Amistad are now free.
1841
Texas gives its citizens the right and responsibility to apprehend runaway slaves and turn them over to the law so that they may be returned to their owners or sold at auction
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