| Volume | Part(s) | Core theme | |--------|---------|-------------| | I | I‑II | Introduction; Genesis of Civilizations | | II | III‑IV | Growth; Breakdowns | | III | V‑VI | Breakdowns (cont.); Universal States | | IV | VII‑VIII | Universal Churches; Heroic Ages | | V | IX‑X | Contacts between Civilizations (Space) | | VI | XI‑XII | Contacts (Time); Law & Freedom | | VII | XIII | Universal Churches (expanded) | | VIII | XIV‑XV | Heroic Ages (expanded); Contacts in Space | | IX | XVI‑XVII | Law & Freedom; Prospects | | X | XVIII | Inspirations of Historians | | XI | XIX‑XXI | Why study history?; Appendix of genealogies | | XII | — | Reconsiderations (Toynbee’s later reflections, including replies to critics) |

– Defines "societies" (rather than nations) as the primary unit of historical study and explores the origins of major civilizations.

: Civilizations are born when a society successfully meets a significant challenge—environmental, social, or external—with a creative response redeot.mte.gov.br Creative vs. Dominant Minorities