At the same time the treaties of Jay and Pinckney gave us in fact the boundaries which the peace of 1783 had only given us in name.

The execution of these treaties put an end in the north to the intrigues of the British, who had stirred the Indians to hostility against the Americans; and in the south to the far more treacherous intrigues of the Spaniards, who showed astounding duplicity, and whose intrigues extended not only to the Indians but also to the baser separatist leaders among the Westerners themselves.
The cession of Louisiana followed.

Its true history is to be found, not in the doings of the diplomats who determined merely the terms upon which it was made, but in the western growth of the people of the United States from 1769 to 1803, which made it inevitable.

The men who settled and peopled the western wilderness were the men who won Louisiana; for it was surrendered by France merely because it was impossible to hold it against the American advance.

Jefferson, through his agents at Paris, asked only for New Orleans; but Napoleon thrust upon him the great West, because Napoleon saw, what the American statesmen and diplomats did not see, but what the Westerners felt; for he saw that no European power could hold the country beyond the Mississippi when the Americans had made good their foothold upon the hither bank.
It remained to explore the unknown land; and this task fell, not to mere wild hunters, such as those who had first penetrated the wooded wilderness beyond the Alleghanies, but to officers of the regular army, who obeyed the orders of the National Government.