How these dates were made
Why this bar's edges are floors, not a founding and a fall.
The atlas draws the world at 4 moments in time, not continuously. This bar runs from the first snapshot in which Austro-Asiatic rice 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 East Asia 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.
Polity · East Asia
Xiongnu
400 BCE – 500 CELandmark · East Asia
Great Wall of China
700 BCE – still standingConflict · East Asia
Warring States Period
475 BCE – 221 BCEPolity · East Asia
Zhoa
Attested 1500 BCE – 700 BCELandmark · East Asia
Temple of Confucius, Qufu
478 BCE – still standingConflict · East Asia
Spring and Autumn Period Wars
771 BCE – 476 BCEPolity · East Asia
Sinic
Attested 1500 BCE – 700 BCELandmark · East Asia
Yoshinogari
400 BCE – 300 CEDated moments inside this span
Events the timeline places between 1500 BCE and 400 BCE.
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
- Great Wall of ChinaSeverin.stalder · CC BY-SA 3.0
- Warring States periodPhilg88 · CC BY-SA 3.0
- Temple of Confucius, Qufukanegen · CC BY 2.0