State · 1397 – 1523
Kalmar Union
A state of 1397 – 1523 — 126 years in Europe. It was replaced by Denmark–Norway. The atlas records 5 things within it — wars and battles 2 · unrest and atrocity 1 · people 2. Its line of rulers holds 2 people.
For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the state.
- Stood
- 126 years
- 1397 – 1523
- Rulers
- 2
- the monarch
- Most ground
- 1.28 million km²
- in 1482
- Within it
- 5
- recorded rows
- Symbol
- 1
- on record, with years
1398 · first mapped · 516,700 km²
1482 · at its largest · 1.28 million km²
Where it sits in time
Five thousand years, 3000 BCE to 2026; the state in gold, what it replaced or followed and what replaced or followed it in grey.
Before and after
The states the record files it as replacing or following, and those that replaced or followed it - Wikidata's own statements, each read from this state's side.
After it
- Denmark–Norway · replaced by · 1536 – 1814
Rulers
The line of monarch.
| Ruler | Reign | Length | How it ended · source | To the ruler before |
|---|
2 rulers, 0 with terms dated as terms. A blank in the last column means no kin on record, which is coverage, never “unrelated”.
Ground held, by year
km² inside its borders as the borders dataset draws them, measured on an equal-area grid; a step series, held between the years the dataset maps.
945,000 km² in 1407, 1.28 million km² in 1523; at its largest 1.28 million km² in 1487. Cliopatria, CC BY 4.0.
Flag or arms
Each symbol with the years its own statement gives; the timeline flies the one of the year on screen.

flag, undatedFlag of the Kalmar Union · Public domain
What happened within it, by century
Every row the atlas hosts under this state, by the century it began in: wars and battles in red, risings, regime changes and massacres beside them, everything else in grey. A tall bar is a century the record is full for, which is partly a fact about Wikipedia.
1400 – 14992 rows · 1 wars and battles
- Johan Rantzau · commander · 1492 – 1565
- Dano-Hanseatic War · war · 1426 – 1435
1500 – 15993 rows · 1 wars and battles · 1 risings, regime changes and massacres
- Swedish War of Liberation · unrest · 1521 – 1523
- Thomas FitzGerald, 10th Earl of Kildare · politician · 1513 – 1537
- Dano-Swedish War · war · 1501 – 1512
Among all states
Each measure against the states that carry it, never against all of them: a bar is the share of those states below this one.
- How long it stood126 years
stood longer than 51% of 3,187 states with a recorded end or still standing.
- The most ground it held1,278,100 km²
held more ground at its peak than 87% of 1,465 states with a border in Cliopatria.
- Wars recorded per century1.6
had more wars on record per century than 97% of 3,187 states, counting the wars the atlas hosts under each.
- Rulers on record2
has more rulers on record than 34% of 1,968 states with a line of rulers.
What led to it, and what came of it
The investigation's own picture: 0 causes the record names and 3 results, the strongest six of each at their own years, joined to the state by the kind of claim - a recorded statement solid, the article's sentence dashed, a theory dash-dot.
Open the investigation: every row with its evidence, the conditions at the time, the theories condition by condition, and the succession analysed.
Theories that apply to its ending
Of 3 theories of why states fall, 1 has every condition present at this ending and 1 some of them; each is applied by its own logic, condition by condition, and whether its authors named this case is a footnote.
Dynastic cycle and the decay of group feeling
Ibn Khaldun 1377 · Turchin & Nefedov 2009
Applies by its own logic: the condition it names held here, and this is the kind of outcome it predicts — adverse regime change or the state's ending.
- the state 90 to 160 years old — ageBand 126
Open in the atlas
- On the timeline, 1384 – 1536, with everything that stood beside it.
- On the map in 1482, live: scrub the year and watch its borders move.
- Investigate it: what led to it, what came of it, and its succession analysed.
Wikidata Q62623 (CC0) · borders Cliopatria, CC BY 4.0 · coast and rivers Natural Earth · symbols from Wikimedia Commons, each credited above · data built 2026-10-06 · Pastlas v2.9.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.