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eventVerified

Cunctos populos of 28 February 380 defines Nicene Trinitarian Christianity as the licit public faith of imperial subjects

Pagan temple laws of 391–392 are later and different. Baptism later in 380 is neighbouring biography, not this text. In the causal graph this event weakens Protection of Minority Rights, a driver that strengthens Having a say in government — a worsening welfare path.

Sources: [1][2]

Read the full account

Context

Pagan temple laws of 391–392 are later and different. Baptism later in 380 is neighbouring biography, not this text.

Theodosius I’s documented role is bounded by other offices and collaborators named in the sources below.

CTh 16.1.2, issued from Thessalonica to the people of Constantinople, names Damasus and Peter of Alexandria as the measure of Catholic faith. Britannica: prescribed without consulting ecclesiastical authorities; first documentary use of Catholic Christians in this sense. Not a 391 temple law. Not an overnight ban of all paganism.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Theodosius I

    Person

    Direct responsibility

    responsibility level 0.4 · verified

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactCunctos populos of 28 February 380 defines Nicene Trinitarian Christianity as the licit public faith of imperial subjects
    2. weakensDriverProtection of Minority Rights
    3. strengthensIndicators (2)Having a say in government
    Worsening path

    impact weight 0.5 · Effect from 28 February 380 · verified

    • Having a say in government

      via Protection of Minority Rights

      Worse

      Strengthens · Relationship strength 0.23 (weight 0.5 × strength 0.45)

      Observed

      29.8% of population aged 16-65 years · 8.13 below the normal line (2023)

      Worse than normal

      Two readings: 30.2% of population aged 16-65 years (2021) and 29.8% of population aged 16-65 years (2023).

      20212023

      Above normal = better

    • Rule of Law Gap from the Highest Governance Score

      via Protection of Minority Rights

      Worse

      Weakens · Relationship strength 0.23 (weight 0.5 × strength 0.45)

      Observed

      43.9 Score · 43.9 above the normal line (2024)

      Worse than normal

      26 readings, 1996–2024: rose from 43 Score to 43.9 Score.

      Normal is zero · any amount = worse

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Fordham — Codex Theodosianus, selections from Book XVIFordham University / Internet History Sourcebooks · High credibility · verified
  2. 2.Britannica — Theodosius IEncyclopaedia Britannica · High credibility · verified
What the sources establish

Fordham’s Book XVI extract prints Cunctos populos as an edict that all peoples under the emperors should follow the religion of Damasus and Peter of Alexandria. Britannica independently records the 28 February 380 creed-edict.

Theodosius I did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorTheodosius I
  2. contributed toFactCunctos populos of 28 February 380 defines Nicene Trinitarian Christianity as the licit public faith of imperial subjects
  3. weakensDriverProtection of Minority Rights
  4. strengthensIndicatorHaving a say in government

Cite this page

Factrail. (2026). Cunctos populos of 28 February 380 defines Nicene Trinitarian Christianity as the licit public faith of imperial subjects. Factrail. https://factrail.ai/facts/theo-cunctos-populos-380

https://factrail.ai/facts/theo-cunctos-populos-380

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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