v. 1. Ancient civilization: 4000 B.C.-400 A.D.--v. 2. Medieval society: 400-1450.--v. 3. Early modern Europe: 1450-1650.--v. 4. The fulfillment and collapse of the old regime: 1650-1815.--v. 5. The making of the modern world: 1815-1914.--v. 6. The twentieth century: 1914-to the present