v.1. The dawn of civilization: earliest times of 700 B. C. -- v.2: The development of sedentary and nomadic civilizations: 700 B. C. To A. D. 250 -- v.3: The crossroads of civilizations: A. D. 250 to 750 -- v.4: The age of achievement: A. D. 750 to the end of the fifteenth century... v.5: Development in contrast: sixteenth to eighrteenth centuries -- v.6: Towards contemporary.....