State · 271 – 257 BCE

Mamertines

A state of 271 – 257 BCE — 14 years in Europe. The atlas records 1 thing within it — wars and battles 1.

Wikidata records no founding for it; the borders dataset maps it from 271 BCE to 257 BCE, and those are the years drawn here.

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

Stood: 14 years; 271 BCE – 257 BCE
Most ground: 900 km²; in 271 BCE
Within it: 1; recorded row

Map: Mamertines in 271 BCE, its borders in gold among its neighbours — Mamertines in 271 BCE, when it held the most ground the borders dataset draws for it: 900 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.

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.

900 km² in 271 BCE, 900 km² in 257 BCE; at its largest 900 km² in 271 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 Messana · battle · 264 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 stood14 years
stood longer than 20% of 3,187 states with a recorded end or still standing.
The most ground it held900 km²
held more ground at its peak than 2% 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.

Open in the atlas

On the timeline, 281 BCE – 247 BCE, with everything that stood beside it.
On the map in 271 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 Q1164281 (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.