How these dates were made
Why this bar's edges are floors, not a founding and a fall.
The atlas draws the world at 10 moments in time, not continuously. This bar runs from the first snapshot in which Islamic city-states 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
Volubilis
300 BCE – 1200 CEPolity · Africa
Khoiasan
Attested 1500 BCE – 1500 CEConflict · Africa
Ghana–Almoravid Conflict
1054 CE – 1083 CETrade route · Africa
East African Coastal Trade
900 CE – 1505 CELandmark · Africa
Great Zimbabwe
1100 CE – still standingPolity · Africa
Empire of Ghana
100 CE – 1200 CEConflict · Africa
Great Zimbabwe & Mutapa Wars
1100 CE – 1629 CETrade route · Africa
Atlantic Middle Passage
1600 CE – 1850 CEDated moments inside this span
Events the timeline places between 1000 CE and 1600 CE.
And in the rest of the world
Records running through the same years, on the other side of the map.
Image credits3 pictures from Wikimedia Commons
- VolubilisSubhros · CC BY-SA 3.0
- Great ZimbabweAndrew Moore from Johannesburg, South Africa · CC BY-SA 2.0
- Ghana EmpireLuxo · CC BY-SA 3.0