Bayou is a term that is used in the united states and is the body of water that is typically found in a low lying area and is an extremely slow-moving stream of a river or a marshy lake or a wetland.
Landmass became the city of the new Orleans that was formed in 2200 B.C when the Mississippi river deposited silts creating a delta region. Before which the Europeans inhabited the north America some 1300 years ago and became an important trade route.