History & Social Studies
How have the natural resources in the United States helped its economic development?
Creating America: A History of the United States, McDougal Littell, 2005, page 20
Creating America: A History of the United States, McDougal Littell, 2005, page 20
Natural resources have helped make the United States the world's leading industrial nation. The United States is the largest producer of energy. The Great Lakes also contain about 20% of the world's fresh water (surface).
Creating America, pg. 10