Louisiana is a Southern state of the United States of America. The surface of the state may properly be divided into two parts, the uplands, and the alluvial and coast and swamp regions. The alluvial regions, including the low swamps and coast lands, cover an area of about 20,000 square miles (52,000 km²); they lie principally along the Mississippi River, which traverses the state from north to south for a distance of about 600 miles (1,000 km) and ultimately emptying into the Gulf of Mexico, the Red River, the Ouachita River and its branches, and other minor streams...