State · 280 – 146 BCE

Achaean League

A state of 280 – 146 BCE — 134 years in Europe. The atlas records 3 things within it — wars and battles 2 · people 1.

For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the state.

Stood: 134 years; 280 BCE – 146 BCE
Most ground: 11,800 km²; in 225 BCE
Within it: 3; recorded rows

Map: Achaean League in 225 BCE, its borders in gold among its neighbours — Achaean League in 225 BCE, when it held the most ground the borders dataset draws for it: 11,800 km². Its neighbours wear their tints, as on the atlas's own map. Borders from Cliopatria (CC BY 4.0), coast and rivers from Natural Earth, cities from Reba, Reitsma & Seto 2016 (CC BY 4.0), each city under the name it bore that year.

Achaean League in 279 BCE, first mapped — The rise and the fall in one frame: the same ground at the years the borders dataset first maps it, maps it largest, and last maps it.

Achaean League in 225 BCE, at its largest — The rise and the fall in one frame: the same ground at the years the borders dataset first maps it, maps it largest, and last maps it.

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.

2,600 km² in 270 BCE, 11,800 km² in 146 BCE; at its largest 11,800 km² in 220 BCE. 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.

300 BCE – 201 BCE1 row · 1 wars and battles

Battle of Mantinea · battle · 207 BCE

200 BCE – 101 BCE2 rows · 1 wars and battles

Polybius · writer · 200 – 129 BCE
Battle of Corinth · battle · 146 BCE

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 stood134 years
stood longer than 53% of 3,187 states with a recorded end or still standing.
The most ground it held11,800 km²
held more ground at its peak than 16% 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.

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 134

Open in the atlas

On the timeline, 293 BCE – 133 BCE, with everything that stood beside it.
On the map in 225 BCE, live: scrub the year and watch its borders move.
Investigate it: what led to it, what came of it, and its succession analysed.

Wikidata Q244796 (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.