Final answer:
The Northwest Ordinance created the Northwest Territory, which included modern-day Ohio, Indiana, Illinois, Michigan, and Wisconsin, established a system for statehood and banned slavery.
Step-by-step explanation:
The Northwest Ordinance established the Northwest Territory which included areas that are now in Ohio, Indiana, Illinois, Michigan, and Wisconsin. This important legislation provided an orderly system for settlement, eventual statehood, and established fundamental rights for the inhabitants, including religious freedom and trial by jury. It also laid out guidelines for land sales and town planning as well as provisions for education, setting aside land for schools within the newly designated territories. Significantly, the ordinance also banned slavery in these territories. The grid pattern of land division stipulated by the ordinance still marks the American landscape to this day, especially evident when viewed from above.