1. F. BraudelThe Mediterranean and the Mediterranean World in the Age of Phillip IIFontana London 1990 190 This is also argued by G. BarracloughHistory in a Changing WorldBlackwell Oxford 1955 G. BarracloughEuropean Unity in Thought and PracticeBlackwell Oxford 1963 E. MorinPenser L'EuropeGallimard Paris 1987
2. Turner. 1921.The Frontier in American History, 41New York: Holt.
3. The American Frontier-Frontier of What?