Notes
1C. Murphy. Are We Rome? The Fall of an Empire and the Fate of America. Boston: Houghton Mifflin, 2007; S. Huntington, Who Are We? The Challenges to America's National Identity. New York: Simon & Schuster, 2004.
2P. Kennedy. The Rise and Fall of the Great Powers: Economic Change and Military Conflict from 1500 to 2000. New York: Vintage Books, 1989; A. Shua, Day of Empire: How Hyperpowers Rise to Global Dominance–and Why they Fall. San Francisco: Doubleday, 2007.