The Serapeum of Alexandria is destroyed in 391 under Theodosian anti-pagan enforcement
In 391 the Serapeum of Alexandria was destroyed amid enforcement of Theodosius’s anti-pagan measures. In the causal graph this event weakens Protection of Minority Rights, a driver that strengthens Having a say in government — a worsening welfare path.
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In 391 the Serapeum of Alexandria was destroyed amid enforcement of Theodosius’s anti-pagan measures. The instrument is that cult-site destruction, neighbouring CTh temple bans without treating the ban text as the same row.
Context
Law and riotous enforcement split. Britannica and DIR independently narrate the Serapeum’s end in the Theodosian moment. Local actors share agency.
Theodosius I’s documented role is bounded by other offices and collaborators named in the sources below.
Conventional years are 347–395. Surviving public files are the Theodosian Code (438 compilation as evidence), chronicles, Ambrose letters, and encyclopedias. Theodosius did not typeset Fordham.
Why it matters
High confidence on the destruction in 391.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Theodosius I
PersonDirect responsibility
responsibility level 0.4 · verified
Imperial anti-pagan constitutions framed local destruction. Alexandria’s authorities and crowds share the violence.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactThe Serapeum of Alexandria is destroyed in 391 under Theodosian anti-pagan enforcement
- weakensDriverProtection of Minority Rights
- strengthensIndicators (2)Having a say in government
impact weight 0.5 · Effect from 1 January 391 · verified
Destruction of the Serapeum is a minority-cult rights cost under Theodosian enforcement, beyond the bare temple-access ban text.
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 normalTwo readings: 30.2% of population aged 16-65 years (2021) and 29.8% of population aged 16-65 years (2023).
20212023 Above normal = better
Weakens · Relationship strength 0.23 (weight 0.5 × strength 0.45)
Observed
43.9 Score · 43.9 above the normal line (2024)
Worse than normal26 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.
- 1.De Imperatoribus Romanis — Theodosius ILoyola University Chicago · High credibility · verified
- 2.Britannica — Theodosius IEncyclopaedia Britannica · High credibility · verified
What the sources establish
Britannica and De Imperatoribus Romanis independently describe the Serapeum’s destruction in 391 under Theodosian policy.
Established: the Serapeum was destroyed in 391 in this enforcement climate. Not established: that Theodosius swung the first axe in person.
Theodosius I did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. Serapeum is not only CTh 16.10.10’s ban text. Keep Alexandria off the February 391 law row as a pure duplicate.
Causal path
How this event connects to drivers and indicators in the graph.
- ActorTheodosius I
- contributed toFactThe Serapeum of Alexandria is destroyed in 391 under Theodosian anti-pagan enforcement
- weakensDriverProtection of Minority Rights
- strengthensIndicatorHaving a say in government
Cite this page
Factrail. (2026). The Serapeum of Alexandria is destroyed in 391 under Theodosian anti-pagan enforcement. Factrail. https://factrail.ai/facts/theo-serapeum-391
https://factrail.ai/facts/theo-serapeum-391
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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