NATCHITOCHES, LOUISIANA. Natchitoches, established as a trading post on the Red River by Louis Juchereau de St. Denis in the winter of 1713–14, became the westernmost French post in Louisiana. Its influence prevented further eastward expansion of the Spanish. There was much conflict over boundaries and Indian trade between Natchitoches and Los Adaes, a Spanish garrison fifteen miles to the west, but an extensive international trade, much of it contraband, was carried on; on the whole, the two nationalities were good neighbors. Natchitoches was the eastern outlet for raw products of early Texas and in turn a source of manufactured goods.
Full article on the Texas State Historical Association's Handbook of Texas Online