Fort Steuben

Fort Steuben was a fortification erected in present day Steubenville, Ohio in the 18th century to provide protection from Indians for the first surveyors to venture into the Northwest Territory.

Acquired by Great Britain from France following the 1763 Treaty of Paris, the Ohio Country had been closed to white settlement by the Proclamation of 1763. The United States claimed the region after the 1783 Treaty of Paris that ended the American Revolutionary War. The Congress passed the Land Ordinance of 1785 as a formal means of surveying, selling, and settling the land and raising revenue. The survey was to begin in present day East Liverpool, Ohio, on the north bank of the Ohio River where it leaves Pennsylvania, and then work westward into present day Ohio. The Geographer of the United States, Thomas Hutchins, assisted by surveyors from a number of states, began the survey on September 30, 1785. On October 8, word was received of an Indian attack on the Tuscarawas River. He and his men were scared, and returned to Pittsburgh after only a few miles of the first westward line, (the Geographers Line), had been completed. Hutchins returned to New York that autumn.

On July 20, 1786, Hutchins and his group gathered at Pittsburgh, Pennsylvania to resume their survey. Fort Harmar had been constructed at the confluence of the Muskingum River and Ohio River, present day Harmar district of Marietta, Ohio. Hutchins had requested federal troops for protection. Colonel Josiah Harmar ordered Major John Francis Hamtramck and some of the First American Regiment to guard the surveyors. Hamtramck felt it necessary to build a fort to protect the surveyors, and to prevent squatters from settling in the area.

...
Wikipedia