In 1799, Spain gave Louisiana back to France in exchange for the promise of a throne in central Italy. Although the agreement was signed on October 1, 1800, it did not go into effect until 1802. The following year, Napoleon sold Louisiana to the United States. Many of the Spaniards who had moved to the colony left for Texas, Florida, or other Spanish-held lands. The original agreement between Spain and France had not explicitly specified the borders of Louisiana, and the descriptions in the documents were ambiguous and contradictory. Even when both territories had been under Spanish control, there was disagreement on where the border should be. In 1793, the King of Spain decided that there was no need to move the boundary from Natchitoches to the Sabine River, as had been recommended by some Frenchmen.Weddle (1995), p. 194.
