State · 794 – 1185
Heian period
A state of 794 – 1185 — 391 years in East and Southeast Asia. The atlas records 30 things within it — wars and battles 21 · unrest and atrocity 2 · people 7.
For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the state.
- Stood
- 391 years
- 794 – 1185
- Most ground
- 243,600 km²
- in 1094
- Within it
- 30
- recorded rows
Where it sits in time
Five thousand years, 3000 BCE to 2026; the state in gold.
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.
230,100 km² in 794, 243,600 km² in 1185; at its largest 243,600 km² in 1094. Cliopatria, CC BY 4.0.
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.
900 – 9991 row
- Murasaki Shikibu · philosopher · 973 – 1019
1000 – 10991 row · 1 wars and battles
- Toi invasion · war · 1019
1100 – 119928 rows · 20 wars and battles · 2 risings, regime changes and massacres
- Minamoto no Yoritomo · politician · 1147 – 1199
- Emperor Go-Toba · writer · 1180 – 1239
- Emperor Go-Shirakawa · person · 1127 – 1192
- Minamoto no Yoshitsune · commander · 1159 – 1189
- Genpei War · war · 1180 – 1185
- Minamoto no Yoshinaka · commander · 1154 – 1184
- Hōgen rebellion · war · 1156
- Battle of Dan-no-ura · battle · 1185
and 20 more in the atlas.
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 stood391 years
stood longer than 80% of 3,187 states with a recorded end or still standing.
- The most ground it held243,600 km²
held more ground at its peak than 63% of 1,465 states with a border in Cliopatria.
- Wars recorded per century0.8
had more wars on record per century than 92% of 3,187 states, counting the wars the atlas hosts under each.
What led to it, and what came of it
The investigation's own picture: 1 cause the record names and 0 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, 755 – 1224, with everything that stood beside it.
- On the map in 1094, live: scrub the year and watch its borders move.
- Investigate it: what led to it, what came of it, and its succession analysed.
Wikidata Q193292 (CC0) · borders Cliopatria, CC BY 4.0 · coast and rivers Natural Earth · data built 2026-10-06 · Pastlas v2.9.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.