Warren W. Hassler
Contributor
Emeritus Professor of American History, Pennsylvania State University, University Park. Author of Commanders of the Army of the Potomac and others.
Primary Contributions (2)
United States, country in North America, a federal republic of 50 states. Besides the 48 conterminous states that occupy the middle latitudes of the continent, the United States includes the state of Alaska, at the northwestern extreme of North America, and the island state of Hawaii, in the…
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Publications (1)
