The natural result followed.

Louisiana was yielded up to Spain in 1763, in order to reconcile the Court of Madrid to cessions required by that same Peace of Paris.

Twenty years later Spain recovered from England the provinces of eastern and western Florida; and thus, at the dawn of the nineteenth century, the red and yellow flag waved over all the lands between California, New Orleans, and the southern tip of Florida.[198] Many efforts were made by France to regain her old Mississippi province; and in 1795, at the break up of the First Coalition, the victorious Republic pressed Spain to yield up this territory, where the settlers were still French at heart.

Doubtless the weak King of Spain would have yielded; but his chief Minister, Godoy, clung tenaciously to Louisiana, and consented to cede only the Spanish part of St.Domingo--a diplomatic success which helped to earn him the title of the Prince of the Peace.

So matters remained until Talleyrand, as Foreign Minister, sought to gain Louisiana from Spain before it slipped into the horny fists of the Anglo-Saxons.
That there was every prospect of this last event was the conviction not only of the politicians at Washington, but also of every iron-worker on the Ohio and of every planter on the Tennessee.