How these dates were made
Why this bar's edges are floors, not a founding and a fall.
The atlas draws the world at 11 moments in time, not continuously. This bar runs from the first snapshot in which Britany 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 Europe 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 · Europe
Mausoleum at Halicarnassus
350 BCE – 1404 CEPolity · Europe
Ottoman Empire
1299 CE – 1922 CEConflict · Europe
Byzantine–Arab Wars
629 CE – 1180 CETrade route · Europe
Varangian Trade Route
800 CE – 1100 CELandmark · Europe
Rila Monastery
927 CE – still standingPolity · Europe
Holy Roman Empire
962 CE – 1806 CEConflict · Europe
Viking Invasions
793 CE – 1066 CETrade route · Europe
Viking North Sea Trade
800 CE – 1100 CEDated moments inside this span
Events the timeline places between 800 CE and 1530 CE.
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
- Mausoleum at HalicarnassusJona Lendering · CC0
- Flag of the Ottoman Empire (1844–1922)User:Orwellianist · Public domain
- Arab–Byzantine warsCodex Skylitzes Matritensis, Bibliteca Nacional de Madrid, Vitr. 26-2, Bild-Nr. 77, f 34 … · Public domain
- Rila MonasteryRaggatt2000 · CC BY-SA 3.0
- Banner of the Holy Roman Emperor with haloes (1430-1806)David Liuzzo, eagle by N3MO · CC BY-SA 3.0
- Viking expansionAbbey of Saint-Aubin · Public domain