What is 7 ranges?

The '7 Ranges' commonly refers to a historical land surveying term for a specific region in eastern Ohio, known as the Seven Ranges. This area was the first part of the Northwest Territory to be surveyed and sold by the federal government under the Land Ordinance of 1785. The Seven Ranges are significant for their role in developing the Public Land Survey System in the United States. The term may also be used in other contexts, but it is most often associated with this important era in American land history.