At the organization of the Indiana Territory from the Northwest Territory in 1800, the Northwest Territory including present day Indiana was divided between Knox County (seat Vincennes) in the south, and Wayne County, including northern Ohio (seat Detroit) north of Fort Wayne in the north. By the Ohio Enabling Act of 1802 settlers in the Whitewater valley became citizens of the Indiana Territory and residents of Clark county, which had been organized from the eastern part of Knox in 1801, with the county seat at Falls of the Ohio, later called Clarksville.