lafayette helped to outlaw slavery by being a spy
1805
Pennsylvania was the first state to outlaw the importation of blacks for slavery in 1682.
Vermont was the first state to abolish slavery in its constitution in 1777.
the north
abolitionists
it was outlawed in 1848
He did in 1865
Slavery. See related questions.
Abolitionists
Mississippi did not outlaw slavery until 1995. No that is not a typo.
Georgia Colony
In 1793, Upper Canada, now Ontario, passed the Act Against Slavery, making it the first British colony to outlaw slavery. The former 13 colonies wouldn't outlaw slavery for another seven decades.