
Ancient Civilizations & Origins · The Worlds Index
Every civilization, in place and time
Every ancient civilization Second City Standard covers, mapped by region and rated by how strong the archaeological record actually is.
- Worlds
- 21
- Regions
- 7
- Span
- 10,000 BCE – 1600 CE
How strong the record is across this collection
- 13 Documented Historical Record
- 6 Archaeological Evidence
- 2 Active Academic Debate
Every world page carries the same badge. Nothing is presented as settled that the excavation record does not settle.
Attested in primary written sources that historians treat as reliable for this claim.
Supported by excavated material: stratigraphy, artifacts, dating, or site survey.
The mainstream position across the relevant scientific literature today.
Specialists disagree. Competing interpretations are presented side by side.
Second City Standard's own reading of the evidence, labeled as such.
Proposed but unsupported by accepted evidence. Reported, never endorsed.
Nile & North Africa
River agriculture, desert logistics, and the longest state records we have.
Mesopotamia & the Fertile Crescent
Where cities, writing, law and accounting first appear in the same layer.
Mediterranean World
Sea-connected states that argued about their own history in writing.
Persia & Central Asia
Imperial administration at continental scale, recorded by allies and enemies.
South Asia
Planned cities and a script that has still not been read.
East Asia
Continuous bureaucratic record-keeping, metallurgy and monumental defence.
Mesoamerica
Astronomy, calendars and monumental stone in tropical environments.
South America
Vertical agriculture, road engineering, and record-keeping without writing.
Northern Europe
Societies mostly described by outsiders, now being re-read from excavation.
Pacific
The limit case: an island society studied for what isolation does to people.
Nile & North Africa
River agriculture, desert logistics, and the longest state records we have.
Mesopotamia & the Fertile Crescent
Where cities, writing, law and accounting first appear in the same layer.
Mediterranean World
Sea-connected states that argued about their own history in writing.
Persia & Central Asia
Imperial administration at continental scale, recorded by allies and enemies.




















