Wisconsin is part of the Union, and slavery is prohibited under Federal Law and the US Constitution. It may also be prohibited under the Wisconsin Constitution as well.
The Northwest Ordinance of 1787 banned slavery in the Northwest Territory, which included the future states of Wisconsin and Illinois. Additionally, the Illinois Constitution of 1818 and the Wisconsin Constitution of 1848 both explicitly prohibited slavery in those states.
Virgina was the state that prohibited slavery in its construction.
The state of Virginia was prohibited slavery in its construction.
Massachusetts prohibited slavery in 1780
Virginia was prohibited slavery in its construction before achieving statehood.
Slavery
slavery
northwest ordinance
The Northwest Ordinance of 1787 prohibited slavery in the Northwest Territory, which included the present-day states of Ohio, Indiana, Illinois, Michigan, and Wisconsin. This marked an important step towards limiting the expansion of slavery in the United States and contributed to the eventual abolition of slavery in the northern states.
Slavery
Slavery was prohibited in land north of the 36-30 parallel
The 13th Amendment to the Constitution of the US prohibited slavery.