Layers is the answer !!!!!!!!!
Louisiana - Spanning nearly 1 million acres, south-central Louisiana's Atchafalaya Basin is the nation's largest river swamp. A distributary of the Mississippi River, the swamp begins near Simmesport and stretches 140 miles south to the Gulf of Mexico.
Answer: El Salvador
Explanation: El Salvador has a population density of 303 people per square kilometer (785 per square mile).
Dividing islands north and South Korea
