The great ancient civilizations flourished around river valleys because the rivers produce rich fertile soil and a supply of water for irrigation of crops and human consumption. This allows for the agricultural production to be greater and it can sustain more people.
<span>The largest group of non-willing immigrants to America were taken from "Africa," since it was Africans who worked in the fields in the American South (which was the area that contained the most slaves). </span>
Franklin D. Roosevelt was the 32nd president of the United States of America.
The Ozark Plateau is heavily forested and contains many hills. It is he most extensive interior highland region between the Rockies and the Appalachians.
The area is known for sandstone hills and ridges.
