The settlement of Baton Rouge by Europeans began in 1721 when French colonists established a military and trading post. Since European settlement, Baton Rouge has been governed by France, Britain, Spain, Louisiana, the Republic of West Florida, the United States, the Confederate States, and the United States again. In 1755, when French-speaking settlers of Acadia in Canada's Maritime provinces were expelled by British forces, many took up residence in rural Louisiana. Popularly known as Cajuns, the descendants of the Acadians maintained a separate culture. During the first half of the 19th century, Baton Rouge grew steadily as the result of steamboat trade and transportation.