How these dates were made
Why this bar's edges are floors, not a founding and a fall.
The atlas draws the world at 6 moments in time, not continuously. This bar runs from the first snapshot in which Ethiopian highland farmers appears to the last, so both edges are floors — the earliest and latest years it is attested, not a founding and a dissolution.
Elsewhere in Africa at the time
Records whose own span overlaps this one, found by the same test the canvas draws with. The bar under each card is where it sits inside this one.
Landmark · Africa
Leptis Magna
1000 BCE – still standingPolity · Africa
Khoiasan
Attested 1500 BCE – 1500 CELandmark · Africa
Tassili n'Ajjer
8000 BCE – 1500 BCEPolity · Africa
Berbers
Attested 1500 BCE – 900 CELandmark · Africa
Thimlich Ohinga
1400 BCE – 1900 CEPolity · Africa
Guanches
Attested 1500 BCE – 1815 CELandmark · Africa
Taï National Park
3000 BCE – still standingPolity · Africa
West African cereal farmers
Attested 1500 BCE – 1500 CEDated moments inside this span
Events the timeline places between 1500 BCE and 323 BCE.
And in the rest of the world
Records running through the same years, on the other side of the map.
Image credits6 pictures from Wikimedia Commons
- Leptis Magnajoepyrek from Richmond, Va, USA · CC BY-SA 2.0
- Tassili n'AjjerHeribertus2 · CC BY-SA 4.0
- Berber flagMysid · Public domain
- Thimlich OhingaWycondi · CC BY-SA 3.0
- GuanchesPhotograph by Mike Peel ( www.mikepeel.net ). · CC BY-SA 4.0
- Taï National Parkyakovlev.alexey from Moscow, Russia · CC BY-SA 2.0