Scientists discover massive deposits of this valuable resource sitting beneath the feet of millions of Americans.

Courtesy Farrar, Straus and Giroux Picture a map of the United ... Very quickly after the United States does all of its contiguous territorial expansion within North America, it starts claiming ...

The first map of the United States drawn and printed in America by an American was, until a few years ago, hardly known at all. Only seven original copies exist, and the best preserved is now on ...

List of States in USA: The United States of America is a country situated in the North American continent. It is the fourth largest country in the world as per the area covered. There are 50 ...