Every state has outlawed slavery, so....
No, it outlawed slavery in its 1777 Constittution and again by State Law in 1858.
Vermont was the first colony to abolish slavery in its state constitution in 1777. This made it the first state in North America to abolish slavery.
The thirteenth amendment outlawed slavery in the United States.
Slavery was outlawed.
NIt outlawed slavery in the Northwest Territory Thanks
it isn't outlawed there are slaves in Italy
Before that war the majority of states had outlawed slavery, primarily in the North thou discrimination did occur. The Emancipation Proclamation threatened to free the slaves who were in the south if they did not rejoin the union. So nothing outlawed slavery outright but each state legeslated for itself and after the war the south had it forced upon them.
The Thirteenth Amendment to the United States Constitution abolished slavery and involuntary servitude, except as punishment for a crime.
Slavery
Slavery was outlawed in the United States by the 13th Amendment, so anyone involved in its passage helped forbid slavery (including the Houses of Congress and the State Legislatures).
Georgia originally outlawed slavery but later reversed its policy in 1751.
They would not have enough state votes to pass the constitution if slavery was outlawed by it. The south would have voted against it.