State · 1814 – 1866
Electorate of Hesse
A state of 1814 – 1866 — 52 years in Europe. It replaced Landgraviate of Hesse-Rotenburg and followed Holy Roman Empire and Kingdom of Westphalia. It was replaced by Hesse-Nassau and followed by Kingdom of Prussia. The atlas records 1 thing within it — people 1. Its line of rulers holds 1 person. Its own article says it was conquered by Prussia.
For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the state.
- Stood
- 52 years
- 1814 – 1866
- Rulers
- 1
- the Elector of Hesse
- Most ground
- 13,900 km²
- in 1820
- Within it
- 1
- recorded row
- Symbols
- 2
- on record, with years
1820 · at its largest · 13,900 km²
1866 · last mapped · 300 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.
Before it
- Holy Roman Empire · follows · 962 – 1806
- Landgraviate of Hesse-Rotenburg · replaces · 1627 – 1834
- Kingdom of Westphalia · follows · 1807 – 1813
After it
- Kingdom of Prussia · followed by · 1701 – 1918
- Hesse-Nassau · replaced by
How it ended, as its article says
Conquered by Prussia, 1866. Read from the article's section “lead” by its grammar; the claim is only that the article says so.
It consisted of several detached territories to the north of Frankfurt, which survived until the state was annexed by Prussia in 1866 following the Austro-Prussian War.
One sentence of the English Wikipedia article, CC BY-SA 4.0.
Rulers
Read from the state’s own English article and its rulers’ articles, where Wikidata names no ruler.
| Ruler | Reign | Length | How it ended · source | To the ruler before |
|---|---|---|---|---|
| Frederick William, Elector of Hesse | 1847 – 1866 | 19 years | ending not on record |
1 rulers, 1 with terms dated as terms, covering 1847 – 1866. Only 19 years of the line are dated - too short for a median. 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.
10,500 km² in 1814, 300 km² in 1866; at its largest 13,900 km² in 1824. Cliopatria, CC BY 4.0.
Flags and arms, in order
Each symbol with the years its own statement gives; the timeline flies the one of the year on screen.
.svg/120px-Arms_of_the_house_of_Hesse-Kassel_(1815-1866).svg.png)
coat of arms, undatedArms of the house of Hesse-Kassel (1815-1866) · CC BY-SA 4.0 · MostEpic 
flag, undatedFlag of Hesse · 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.
1800 – 18991 row
- K. Ferdinand Braun · inventor · 1850 – 1918
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 stood52 years
stood longer than 34% of 3,187 states with a recorded end or still standing.
- The most ground it held13,900 km²
held more ground at its peak than 17% of 1,465 states with a border in Cliopatria.
- Wars recorded per centurynone
had more wars on record per century than 44% of 3,187 states, counting the wars the atlas hosts under each.
- Rulers on record1
has more rulers on record than 13% of 1,968 states with a line of rulers.
What led to it, and what came of it
The investigation's own picture: 22 causes the record names and 2 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.
Open in the atlas
- On the timeline, 1804 – 1876, with everything that stood beside it.
- On the map in 1820, live: scrub the year and watch its borders move.
- Investigate it: what led to it, what came of it, and its succession analysed.
Wikidata Q529605 (CC0) · borders Cliopatria, CC BY 4.0 · coast and rivers Natural Earth · symbols from Wikimedia Commons, each credited above · one sentence of the English Wikipedia article, CC BY-SA 4.0 · data built 2026-10-06 · Pastlas v2.9.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.