Which is true about the Northwest Ordinance of 1787? A-The Northwest Ordinance ensured that any new free state would be balanced by a new slave state.
B-The Northwest Ordinance banned the institution of slavery in the Northwest Territories.
C-The Northwest Ordinance encouraged slave owners to settle in the Northwest Territories.
D-The Northwest Ordinance guaranteed freedom for any slave who escaped to the Northwest Territories.

The Northwest Ordinance banned the institution of slavery in the Northwest Territories.  

Explanation:

The northwest ordinance were pushed by the progressive group to outlaw all slavery in United States. They're based on the principles that all humans are equal and none should be forced to give their livelihood under chains and whips.

The northern states argued that the southern states should have no ground to refuse this ordinance. Ever since the industrial revolution, the use of slavery is no longer necessary. They wanted the south to transition to using machinery for their productions rather than another human being.