Co-operation among the Native American tribes in the Northwestern Confederacy had gone back to the French colonial era. It was renewed during the American Revolutionary War. At gatherings in 1783 and 1784, native nations worked to formalize a union to defend against the United States. The confederacy formally came together in Autumn 1785 at Fort Detroit, proclaiming that the parties to the confederacy would deal jointly with the United States, forbidding individual tribes from dealing directly with the United States, and declaring the Ohio River as the boundary between their lands and those of American settlers. Nevertheless, a group of Shawnee, Delaware, and Wyandot agreed to allow U.S. settlement in a tract of land north of the Ohio River in the January 1786 Treaty of Fort Finney. This treaty sparked an eruption of violence between native inhabitants and U.S. settlers. That year, a Wyandot messenger named Scotosh warned Congress that the Wabash, Twightwee, and Miami nations would disrupt U.S. surveyors, and Congress promised reprisals if that occurred. The Ft. Finney treaty was rejected by a September 1786 council of 35 native nations, including British representatives, who met at a Wyandot (Huron) village on the Upper Sandusky. Logan's Raid into Shawnee territory occurred weeks later, hardening Native views on U.S. relations. That December, a council on the Detroit River sent a letter to U.S. Congress signed by eleven native nations, who referred to themselves as "the United Indian Nations, at their Confederate Council."