The best explanation for how settlers gained more control of Ohio by 1795 was Settlers and American Indians negotiated a treaty that gave settlers control of the land.
By 1795:
This treaty was signed by the leaders of the prominent tribes in the area and allowed for the settlers to take control of Ohio provided they were still allowed to hunt there.
In conclusion, option C is correct.
Find out more about the Treaty of Greenville at https://brainly.com/question/897465.