The war in the West ended, as it began, in a carnival of butchery. Treacherous attacks, massacres, burnings, and pillagings were everyday occurrences, and white men were hardly less at fault than red. Indeed the most discreditable of all the recorded episodes of the time was a heartless massacre by Americans of a large band of Indians that had been Christianized by Moravian missionaries and brought together in a peaceful community on the Muskingum. This slaughter of the innocents at Gnadenhütten ("the Tents of Grace") reveals the frontiersman at his worst. But it was dearly paid for. From the Lakes to the Gulf redskins rose for vengeance. Villages were wiped out, and murderous bands swept far into Virginia and Pennsylvania, evading fortified posts in order to fall with irresistible fury on unsuspecting traders and settlers.

In midsummer, 1782, news of the cessation of hostilities between Great Britain and her former seaboard colonies reached the back country, and the commandant at Detroit made an honest effort to stop all offensive operations. A messenger failed, however, to reach a certain Captain Caldwell, operating in the Ohio country, in time to prevent him from attacking a Kentucky settlement and bringing on the deadly Battle of Blue Licks, in which the Americans were defeated with a loss of seventy-one men. George Rogers Clark forthwith led a retaliatory expedition against the Miami towns, taking prisoners, recapturing whites, and destroying British trading establishments; and with this final flare-up the Revolution came to an end in the Northwest.

The soldier had won the back country for the new nation. Could the diplomat hold it? As early as March 19, 1779,—just three weeks after Clark's capture of Vincennes,—the Continental Congress formally laid claim to the whole of the Northwest; and a few months later John Adams was instructed to negotiate for peace on the understanding that the country's northern and western boundaries were to be the line of the Great Lakes and the Mississippi. When, in 1781, Franklin, Jefferson, Jay, and Laurens were appointed to assist Adams in the negotiation, the new Congress of the Confederation stated that the earlier instructions on boundaries represented its "desires and expectations."

It might have been supposed that if Great Britain could be brought to accept these terms there would be no further difficulty. But obstacles arose from other directions. France had entered the war for her own reasons, and looked with decidedly more satisfaction on the defeat of Great Britain than on the prospect of a new and powerful nation in the Western Hemisphere. Furthermore, she was in close alliance with Spain; and Spain had no sympathy whatever with the American cause as such. At all events, she did not want the United States for a neighbor on the Mississippi.

The American commissioners were under instructions to make no peace without consulting France. But when, in the spring of 1782, Jay came upon the scene of the negotiations at Paris, he demurred. He had been for some time in Spain, and he carried to Paris not only a keen contempt for the Spanish people and Spanish politics, but a strong suspicion that Spain was using her influence to keep the United States from getting the territory between the Lakes and the Ohio. France soon fell under similar suspicion, for she was under obligations, as everyone knew, to satisfy Spain; and little time elapsed before the penetrating American diplomat was semiofficially assured that his suspicions in both directions were well founded.

The mainspring of Spanish policy was the desire to make the Gulf of Mexico a closed sea, under exclusive Spanish control. This plan would be frustrated if the Americans acquired an outlet on the Gulf; furthermore, it would be jeopardized if they retained control on the upper Mississippi. Hence, the States must be kept back from the great river; safety dictated that they be confined to the region east of the Appalachians.

An ingenious plan was thereupon developed. Spain was to resume possession of the Floridas, insuring thereby the coveted unbroken coast line on the Gulf. The vast area between the Mississippi and the Appalachians and south of the Ohio was to be an Indian territory, half under Spanish and half under American "protection." The entire region north of the Ohio was to be kept by Great Britain, or, at the most, divided—on lines to be determined—between Great Britain and the United States. From Rayneval, confidential secretary of the French foreign minister Vergennes, Jay learned that the French Government proposed to give this scheme its support.

Had such terms as these been forced on the new nation, the hundreds of Virginian and Pennsylvanian pioneers who had given up their lives in the planting of American civilization in the back country would have turned in their graves. But Jay had no notion of allowing the scheme to succeed. He sent an emissary to England to counteract the Spanish and French influence. He converted Adams to his way of thinking, and even raised doubts in Franklin's mind. Finally he induced his colleagues to cast their instructions to the winds and negotiate a treaty with the mother country independently.

This simplified matters immensely. Great Britain was a beaten nation, and from the beginning her commissioners played a losing game. There was much haggling over the loyalists, the fisheries, debts; but the boundaries were quickly drawn. Great Britain preferred to see the disputed western country in American hands rather than to leave a chance for it to fall under the control of one of her European rivals.

Accordingly, the Treaty of Paris drew the interior boundary of the new nation through the Great Lakes and connecting waters to the Lake of the Woods; from the most northwestern point of the Lake of the Woods due west to the Mississippi (an impossible line); down the Mississippi to latitude 31°; thence east, by that parallel and by the line which is now the northern boundary of Florida, to the ocean. Three nations, instead of two, again shared the North American Continent: Great Britain kept the territory north of the Lakes; Spain ruled the Floridas and everything west of the Mississippi; the United States held the remainder—an area of more than 825,000 square miles, with a population of three and one half millions.