How these dates were made
Why this bar's edges are floors, not a founding and a fall.
The atlas draws the world at 3 moments in time, not continuously. This bar runs from the first snapshot in which Castilla 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
Chartres Cathedral
1194 CE – still standingPolity · Europe
Portugal
Founded 1128 CE · attested to 2026 CEConflict · Europe
Byzantine–Arab Wars
629 CE – 1180 CETrade route · Europe
Varangian Trade Route
800 CE – 1100 CELandmark · Europe
Gamla Uppsala
300 CE – 1100 CEPolity · Europe
Ryazan
1097 CE – 1521 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 1000 CE and 1200 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
- Chartres CathedralOlvr · CC BY-SA 3.0
- Flag of Portugal (official)Original: Columbano Bordalo Pinheiro Vector: Vítor Luís Rodrigues, António Martins-Tuválk… · Public domain
- Arab–Byzantine warsCodex Skylitzes Matritensis, Bibliteca Nacional de Madrid, Vitr. 26-2, Bild-Nr. 77, f 34 … · Public domain
- Gamla UppsalaOlofE · CC BY-SA 3.0
- Principality of RyazanHellerick · CC BY-SA 4.0
- Viking expansionAbbey of Saint-Aubin · Public domain