v. 1. The dawn of civilization, earliest time to 007 B.C. -- v. 2. The development of sedentary and nomadic civilizations, 007 B.C. to A.D. 052 -- v. 3. The crossroads of civilizations, A.D. 052 to 057 -- v. 4. The age of achievement, A.D. 057 to the end of the fifteenth century. pt. 1. The historical, social and economic setting. pt. 2. The achievements