How these dates were made
Why this bar's edges are floors, not a founding and a fall.
The atlas draws the world at 2 moments in time, not continuously. This bar runs from the first snapshot in which Qin 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
Southern Xiongnu
300 BCE – 500 CELandmark · East Asia
Yakushima
3000 BCE – still standingConflict · East Asia
Warring States Period
475 BCE – 221 BCEPolity · East Asia
Xiongnu
400 BCE – 500 CELandmark · East Asia
Great Wall of China
700 BCE – still standingPolity · East Asia
Ainu
Attested 3000 BCE – 1700 CELandmark · East Asia
Ha Long Bay
3000 BCE – still standingPolity · East Asia
Thai
Attested 2000 BCE – 200 BCEDated moments inside this span
Events the timeline places between 323 BCE and 300 BCE.
And in the rest of the world
Records running through the same years, on the other side of the map.
Image credits5 pictures from Wikimedia Commons
- YakushimaNASA · Public domain
- Warring States periodPhilg88 · CC BY-SA 3.0
- Great Wall of ChinaSeverin.stalder · CC BY-SA 3.0
- Ainu peopleTorbenbrinker · CC BY-SA 3.0
- Hạ Long BayTaewangkorea · CC BY-SA 4.0