Pastlasby Oleh Voronko

State · 1979 – 1992

People's Republic of Kampuchea

A state of 1979 – 1992 — 13 years in East and Southeast Asia. It followed Democratic Kampuchea. It was followed by United Nations Transitional Authority in Cambodia. Its line of rulers holds 5 people. Its own article says it was dissolved by Kingdom of Cambodia.

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

Stood
13 years
1979 – 1992
Rulers
5
the head of state
Most ground
185,000 km²
in 1979
Symbols
3
on record, with years
Map: People's Republic of Kampuchea in 1979, its borders in gold among its neighbours
People's Republic of Kampuchea in 1979, when it held the most ground the borders dataset draws for it: 185,000 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

3000 BCE2000 BCE1000 BCE110002000Democratic Kampuchea: 1976 – 1979People's Republic of Kampuchea: 1979 – 1992

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

After it

  • United Nations Transitional Authority in Cambodia · followed by

How it ended, as its article says

Dissolved by Kingdom of Cambodia, 1993-09. Read from the article's section “History - Peace agreement” by its grammar; the claim is only that the article says so.

The state was finally dissolved with the restoration of the Kingdom of Cambodia in September 1993.

One sentence of the English Wikipedia article, CC BY-SA 4.0.

Rulers

The line of head of state.

Pen Sovan · 1979 – 1981 · no death date to read the end againstHeng Samrin · 1979 – 1992 · no death date to read the end againstSay Phouthang · 1981 – 1985 · no death date to read the end againstHun Sen · 1985 – 1990 · no death date to read the end againstChea Sim · 1990 – 1992 · no death date to read the end against198019851990
ending not on recorda second row: a reign that began before the last had ended — rival claimants, or a shared throne
RulerReignLengthHow it ended · sourceTo the ruler before
Pen Sovan1979 – 19812 yearsending not on record
Heng Samrin1979 – 199213 yearsending not on record
Say Phouthang1981 – 19854 yearsending not on record
Hun Sen1985 – 19905 yearsending not on record
Chea Sim1990 – 19922 yearsending not on record

5 rulers, 5 with terms dated as terms, covering 1979 – 1992. Only 13 years of the line are dated - too short for a median. 2 of 4 handovers irregular - a killing, a deposition, a rival claimant, a rising or a coup beside it. The violent-handover count is withheld: power changed hands so often that any rising falls beside one (exposure 1.00, limit 0.6). 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.

19801982198419861988

185,000 km² in 1979, 185,000 km² in 1989; at its largest 185,000 km² in 1979. 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.

  • Emblem of the People's Republic of Kampuchea (1981-1989)
    coat of arms, undatedEmblem of the People's Republic of Kampuchea (1981-1989) · CC BY-SA 4.0 · Victor Bing
  • Emblem of the People's Republic of Kampuchea (1979–1981)
    coat of arms, undatedEmblem of the People's Republic of Kampuchea (1979–1981) · Public domain
  • Flag of the People's Republic of Kampuchea
    flag, undatedFlag of the People's Republic of Kampuchea · Public domain

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 stood13 years

    stood longer than 19% of 3,187 states with a recorded end or still standing.

  • The most ground it held185,000 km²

    held more ground at its peak than 56% 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 record5

    has more rulers on record than 64% of 1,968 states with a line of rulers.

What led to it, and what came of it

The investigation's own picture: 13 causes 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.

Indochina wars · Linked · 1946 – 1989Indochina warsThird Indochina War · Linked · 1975 – 1991Third Indochina WarDemocratic Kampuchea · Linked · 1976 – 1979Democratic KampucheaCambodian–Vietnamese War · Linked · 1977 – 1991Cambodian–Vietnamese WarPeople's Republic of Kampuchea · 1979 – 1992People's Republic of KampucheaUnited Nations Transitional Authority in Cambodia · Linked · 1992 – 1993United Nations Transitional Auth…1940196019802000
linked

Open the investigation: every row with its evidence, the conditions at the time, the theories condition by condition, and the succession analysed.

Theories that apply to its ending

Of 3 theories of why states fall, 1 has every condition present at this ending; each is applied by its own logic, condition by condition, and whether its authors named this case is a footnote.

  • Demographic-structural breakdown

    Goldstone 1991 · Turchin & Nefedov 2009

    Applies by its own logic: 2 of its 3 conditions held here (it needs 2), and this is the kind of outcome it predicts — unrest, adverse regime change or the state's ending.

    • overlapping reigns — rival claimants — within 20 y, or 3 or more changes of ruler within 20 y, or 2 or more reigns of two years or less within 20 y, or a monarch deposed or killed within 20 y — rivalClaimants -11; handovers 4
    • a war the state is fighting, still under way, or a war the state fought, ended within 10 y — warEnded

Open in the atlas

Wikidata Q867778 (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.