This article’s lead section may not adequately summarize its contents. Relevant discussion may be found on the talk page. The history of Ohio as a state began when the Northwest Territory was divided in 1800 and the remainder reorganized for admission to the union in March, 1803 as the 17th state of the United States. By the mid-18th century, a few American and French fur traders engaged historic Native American tribes in present-day Ohio in the fur trade. The Native Americans had their own extensive trading networks across the continent before the Europeans arrived.