Based on the information provided here, this excerpt from 1787 law is taken from the northwest ordinance.
The Northwest territory in the United States had created many issues in the country, and that is when the Northwest Ordinance was enacted by Congress on July 13, 1787. This ordinance organized the territory from the Appalachians Mountains to the Ohio River. The ordinance tried to end with the many occupations conflicts and even aggressions by settlers that wanted to occupy those territories.
