What is Coastal Plain?How it is formed?

Coastal Plain is a plain that borders the coast of sea and extends from the sea to the nearest elevated land. It is formed by the deposition of solid matter by rivers, by denudation by the sea, or by the emergence of part of the former Continental Shelf due to a relative fall in level of the sea.

One of the world’s largest coastal plains is located in eastern United States. The Gulf Coastal Plain of North America extends northwards from the Gulf of Mexico along the Lower Mississippi River to the Ohio River, which is a distance of about 500 miles