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The Parthian campaign is a late expansion that could not be held, as later Dio prints it

Dio as LacusCurtius prints Trajan’s eastern war, Ctesiphon, and the failure to hold the new provinces. In the causal graph this event weakens the driver Fiscal-Policy Sustainability.

The Parthian campaign is a late expansion that could not be held, as later Dio prints it
Read the full account

Dio as LacusCurtius prints Trajan’s eastern war, Ctesiphon, and the failure to hold the new provinces. The dated carrier is that later history.

Context

Hadrian’s later abandonment is another person’s row. This stores the printed overstretch as Trajanic heading.

Trajan Shared work with other named actors remains in the record.

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

Conventional reign is 98–117 CE.

Why it matters

Printed Parthian overstretch is not a 116 CE treasury spreadsheet.

Who was responsible

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

  • Trajan

    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. FactThe Parthian campaign is a late expansion that could not be held, as later Dio prints it
    2. weakensDriverFiscal-Policy Sustainability

    impact weight 0.5 · Effect from 1 January 116 · verified

    Printed Parthian overstretch is not a 116 CE treasury spreadsheet.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Cambridge studies on the age of TrajanCambridge University Press · High credibility · verified
  2. 2.LacusCurtius — Cassius DioUniversity of Chicago / LacusCurtius · High credibility · verified
What the sources establish

Driver fiscal-policy-sustainability is attached because the Significance sentence names a mechanism from The Parthian campaign is a late expansion that could not be held, as later Dio prints it at 0116-01-01, not because a standing driver list needed coverage. Official page: https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/home.html (opens in a new tab). Independent page: https://www.cambridge.org/core/books/cambridge-companion-to-the-age-of-trajan/ (opens in a new tab).

Causal path

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

  1. ActorTrajan
  2. contributed toFactThe Parthian campaign is a late expansion that could not be held, as later Dio prints it
  3. weakensDriverFiscal-Policy Sustainability

Cite this page

Factrail. (2026). The Parthian campaign is a late expansion that could not be held, as later Dio prints it. Factrail. https://factrail.ai/facts/trj-parthian-overstretch

https://factrail.ai/facts/trj-parthian-overstretch

Accessed 16 October 2026.

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

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