State · 397 – 439

Northern Liang

A state of 397 – 439 — 42 years in East and Southeast Asia. It replaced Later Liang (Sixteen Kingdoms) and Western Liang (Sixteen Kingdoms). It was replaced by Northern Wei. Its line of rulers holds 3 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: 42 years; 397 – 439
Rulers: 3; the Emperor of China
Most ground: 119,500 km²; in 397

Map: Northern Liang in 397, its borders in gold among its neighbours — Northern Liang in 397, when it held the most ground the borders dataset draws for it: 119,500 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, 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

Later Liang (Sixteen Kingdoms) · replaces · 386 – 403
Western Liang (Sixteen Kingdoms) · replaces · 400 – 421

After it

Northern Wei · replaced by · 386 – 535

Rulers

The line of Emperor of China.

died in officeleft alive by a regular road

Ruler	Reign	Length	How it ended · source	To the ruler before
Duan Ye	397 – 401	4 years	died in office, manner not recordedread off the dates alone
Juqu Mengxun	401 – 433	32 years	died in office, manner not recordedread off the dates alone
Juqu Mujian	433 – 439	6 years	left office aliveread off the dates alone	child

3 rulers, 3 with terms dated as terms, covering 397 – 439. Only 42 years of the line are dated - too short for a median. 0 of 2 handovers irregular - a killing, a deposition, a rival claimant, a rising or a coup beside it. 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.

119,500 km² in 397, 118,400 km² in 439; at its largest 119,500 km² in 397. Cliopatria, CC BY 4.0.

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 stood42 years
stood longer than 31% of 3,187 states with a recorded end or still standing.
The most ground it held119,500 km²
held more ground at its peak than 49% 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 record3
has more rulers on record than 48% of 1,968 states with a line of rulers.

What led to it, and what came of it

The investigation's own picture: 1 cause the record names and 1 result, 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.

linked

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, 387 – 449, with everything that stood beside it.
On the map in 397, live: scrub the year and watch its borders move.
Investigate it: what led to it, what came of it, and its succession analysed.

Wikidata Q1539360 (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.