The Northwest Ordinance of 1789, which effectively created the Northwest Territory, banned slavery in this newly created territory of the United States What was a major long-lasting effect of the Northwest Ordinance.
A) established the Ohio River as the permanent boundary between free and slave states that lasted until the Civil war
B) U. S. Supreme Court recognized the authority of the Northwest Ordinance to extend to all states as the states entered the Union
C) prohibition of slavery within the territory and establishing the Ohio River as the border between free and slave states in the territory
D) creation of slavery within the territory and establishing the Ohio River as the border between the free and slave states in the territory