The stage was set for the negotiations of the 1783 Treaty of Paris which officially ended the Revolutionary War. Most people know now that America was given possession of the 13 original colonies following the Revolution. What most people do not think about is that decisions also had to be made concerning the vast western frontier the British possessed. It was a common practice to draw boundary lines along natural borders. Both sides agreed that the new boundary between American and British holdings in the west needed to be a large natural feature that could be easily identified on maps and when traveling through the area. The British argued hard for that boundary to be the Ohio River. However, Clark's conquest at Fort Sackville meant America had taken an area north of the Ohio River in 1779 and had never retreated. The American negotiating team of John Jay, Benjamin Franklin, and John Adams was aware of this victory; and further realized that Americans were already filling up the area and they would be difficult for the diminished British forces to control. The Americans used these points as key negotiating factors, and succeeded in moving the boundary from the Ohio River all the way to the location of the only other big natural boundary in the Midwest- the Great Lakes. Thus the Northwest Territory was created as a part of the newly formed United States of America.