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
Convention of 1800 This led to the Quasi-War of 1798–1800; largely dismantled after independence, the US Navy was quickly re-established and gained the upper hand, with limited support from the British Royal Navy. Despite this, President John Adams continued to seek a diplomatic solution; in addition to the cost of the Quasi-War, the US was increasingly concerned by French ambitions in North America. France ceded Louisiana-New Spain to Spain by the 1763 Treaty of Paris; combined with Spanish Florida, Spain controlled the Mississippi River basin (see Map), effectively blocking US expansion to the South and West. Efforts to manage this through diplomacy, including