Colonial history of the United States Lower Louisiana. This vast tract was first settled at Mobile and Biloxi around 1700, and continued to grow when 7,000 French immigrants founded New Orleans in 1718. Settlement proceeded very slowly; New Orleans became an important port as the gateway to the Mississippi River, but there was little other economic development because the city lacked a prosperous hinterland. In 1763, Louisiana was ceded to Spain around New Orleans and west of the Mississippi River. In the 1780s, the western border of the newly independent United States stretched to the Mississippi River. The United States reached an agreement with Spain for
French language in the United States the form of French spoken in the early days of settlement in the lower Mississippi River valley, and was once the language of the educated land-owning classes. Cajun French, derived from Acadian French, is said to have been introduced with the arrival of Acadian exiles in the 18th century. The Acadians, the francophone inhabitants of Acadia (modern Nova Scotia, New Brunswick, Prince Edward Island, and northern Maine), were expelled from their homeland between 1755 and 1763 by the British. Many Acadians settled in lower Louisiana, where they became known as Cajuns (a corruption of "Acadians"). Their dialect was regarded as