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eventVerified

Theodosius dies at Milan on 17 January 395; Arcadius and Honorius take East and West as a lasting division

This is not Constantine’s 337 as a copy, though the related-person influence is named. In the causal graph this event weakens Democratic Resilience, a driver that strengthens Having a say in government — a worsening welfare path.

Sources: [1][2]

Read the full account

Context

Hereditary child-emperors are the mechanism. Shared ministers (Rufinus, Stilicho) remain.

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

Britannica: sudden death caused a split, sons ruling East and West. Stilicho is the western military guardian in the received file. This is not Constantine’s 337 as a copy, though the related-person influence is named.

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. FactTheodosius dies at Milan on 17 January 395; Arcadius and Honorius take East and West as a lasting division
    2. weakensDriverDemocratic Resilience
    3. strengthensIndicators (3)Having a say in government
    Worsening path

    impact weight 0.5 · Effect from 17 January 395 · verified

    • Having a say in government

      via Democratic Resilience

      Worse

      Strengthens · Relationship strength 0.35 (weight 0.5 × strength 0.7)

      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

    • Clean elections index

      via Democratic Resilience

      Worse

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

      Observed

      0.53 score from 0 to 1 · 0.34 below the normal line (2024)

      Worse than normal

      125 readings, 1900–2024: rose from 0.17 score from 0 to 1 to 0.53 score from 0 to 1.

      Above normal = better

    • WJP Rule of Law Index (global)

      via Democratic Resilience

      Worse

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

      Observed

      0.55 index score (0-1) · 0.26 below the normal line (2024)

      Worse than normal

      Above normal = better

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.De Imperatoribus Romanis — Theodosius ILoyola University Chicago · High credibility · verified
  2. 2.Britannica — Theodosius IEncyclopaedia Britannica · High credibility · verified
What the sources establish

Britannica records death on 17 January 395 at Mediolanum and the dual succession. DIR independently closes the reign there.

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 toFactTheodosius dies at Milan on 17 January 395; Arcadius and Honorius take East and West as a lasting division
  3. weakensDriverDemocratic Resilience
  4. strengthensIndicatorHaving a say in government

Cite this page

Factrail. (2026). Theodosius dies at Milan on 17 January 395; Arcadius and Honorius take East and West as a lasting division. Factrail. https://factrail.ai/facts/theo-death-division-395

https://factrail.ai/facts/theo-death-division-395

Accessed 15 October 2026.

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

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