History of slavery in Louisiana History of slavery in Louisiana Following Robert Cavelier de La Salle establishing the French claim to the territory and the introduction of the name "Louisiana", the first settlements in the southernmost portion of Louisiana (New France) were developed at present-day Biloxi (1699), Mobile (1702), Natchitoches (1714), and New Orleans (1718). Slavery was then established by European colonists. The institution was maintained by the Spanish (1763–1800) when the area was part of New Spain, by the French when they briefly reacquired the colony (1800-03), and by the United States following the Louisiana Purchase of 1803. Due to its complex history, Louisiana
West Florida Controversy bear in mind that in the transfer [of Louisiana to the United States] the identical language was employed that had been used in 1800, so that the government of the United States was subrogated, in express terms, to the rights of France and of Spain. … The United States insisted that by the treaty of 1800 Spain ceded the disputed territory [of West Florida], as part of Louisiana, to France, and that France, in turn, in 1803, ceded it to the United States. Spain, with equal earnestness and persistence, maintained that her cession to France comprehended what was at that