Key points are not available for this paper at this time.
Introduction World Regional Geography: Global Perspectives Chapter 1A The European Realm Chapter 1B European Regions Chapter 2A The Russian Realm Chapter 2B Russian Regions Chapter 3A The North American Realm Chapter 3B North American Regions Chapter 4A The Middle American Realm Chapter 4B Middle American Regions Chapter 5A The South American Realm Chapter 5B South American Regions Chapter 6A The Subsaharan African Realm Chapter 6B Subsaharan African Regions Chapter 7A The North African/Southwest Asian Realm Chapter 7B North African/Southwest Asian Regions Chapter 8A The South Asian Realm Chapter 8B South Asian Regions Chapter 9A The East Asian Realm Chapter 9B East Asian Regions Chapter 10A The Southeast Asian Realm Chapter 10B Southeast Asian Regions Chapter 11 The Austral Realm Chapter 12 Pacific Realm And Polar Futures
Pye et al. (Mon,) studied this question.