Final answer:
The basis for the Ohio River Valley to be considered a territory and eventually a state was established through the Land Ordinance of 1785 and the Ordinance of 1787.
Step-by-step explanation:
The basis for lands around the Ohio River Valley to be considered a territory and eventually a state was established through the Land Ordinance of 1785 and the Ordinance of 1787.
The Land Ordinance of 1785 divided the area north of the Ohio River Valley and west of the Appalachians into townships, which were further divided into sections. This facilitated the settlement of the region by Americans.
The Ordinance of 1787 officially turned the land into the Northwest Territory and prohibited slavery north of the Ohio River. This helped shape the future statehood of the region.