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The Carneia festival constrains the Spartan levy at the time of Thermopylae

Leonidas I’s documented role is: Herodotus reports that Carneia limited the full levy, so a small force went with one king. Ephors and custom bound; he marched with what was sent; later 300-myth is not a tape. In the causal graph this event strengthens Political Polarization, a driver that weakens Having a say in government — a worsening welfare path.

Read the full account

Leonidas I’s documented role is: Herodotus reports that Carneia limited the full levy, so a small force went with one king. Ephors and custom bound; he marched with what was sent; later 300-myth is not a tape. A festival-constraint is not the killing in the pass. Later editors, printers, and excavators remain named where they appear. Leonidas I's documented role is: Herodotus reports that Carneia limited the full levy, so a small force went with one king.

Context

A dual kingship, unnamed ephors, and later 300-myth already sit in the file. A festival is not unique authorship of the pass. Later film is not -480. Named others on the file: Ephors, unnamed Spartiates of the advance force, and later Herodotus as carrier share the constraint. The public setting is the file around -0480-07-15. The instrument stays The Carneia festival constrains the Spartan levy at the time of Thermopylae. The setting of The Carneia festival constrains the Spartan levy at the time of Thermopylae is the public file around -0480-07-15. Driver political-polarization is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

That reading is an impact-path choice, not a property stored on the Fact itself.

Why it matters

Worsening polarisation path: a religious limit that structured who went to the pass. Medium confidence on unique ritual detail. Welfare reading worsening. The attached mechanism is A dated festival-constraint put a public religious limit on mobilisation into the 480 file, distinct from the pass-fight itself. Lag to any modern indicator is not treated as zero. This path is attached because the mechanism is named from this act, not because a driver list needed coverage. The welfare reading on this path is worsening.

Shared responsibility is part of The Carneia festival constrains the Spartan levy at the time of Thermopylae. Naming Leonidas I does not delete co-authors, institutions, or later transmitters. The lag from -0480-07-15 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

Who was responsible

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

  • Direct responsibility

    responsibility level 0.32 · verified

    Herodotus reports that Carneia limited the full levy, so a small force went with one king. Ephors and custom bound; he marched with what was sent; later 300-myth is not a tape.

What changed

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

    1. FactThe Carneia festival constrains the Spartan levy at the time of Thermopylae
    2. strengthensDriverPolitical Polarization
    3. weakensIndicators (2)Having a say in government
    Worsening path

    impact weight 0.3 · Effect from 15 July 480 · verified

    A dated festival-constraint put a public religious limit on mobilisation into the 480 file, distinct from the pass-fight itself.

    • Weakens · Relationship strength 0.14 (weight 0.3 × 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

    • Strengthens · Relationship strength 0.14 (weight 0.3 × 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.Britannica — Leonidas IEncyclopaedia Britannica · High credibility · verified
  2. 2.Perseus — Herodotus, Histories (Godley English as later carrier)Perseus Digital Library / Tufts · High credibility · verified
What the sources establish

Herodotus reports that the Carneia festival constrained Sparta’s full levy, so Leonidas went with an advance force.

Herodotus and Britannica independently mark Carneia as a distinct constraint beside the pass-fight. Official: Perseus — Herodotus, Thermopylae and Carneia (https://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1999.01.0126 (opens in a new tab); Perseus Digital Library). Independent: Britannica — Leonidas I, Carneia and the advance force (https://www.britannica.com/biography/Leonidas-king-of-Sparta (opens in a new tab); Encyclopaedia Britannica). The two URLs are different pages. Where the carrier is a later edition or a received narrative, that limit is stated rather than upgraded to an autograph. Official carrier: Perseus — Herodotus, Thermopylae and Carneia (https://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1999.01.0126 (opens in a new tab); Perseus Digital Library). Independent carrier: Britannica — Leonidas I, Carneia and the advance force (https://www.britannica.com/biography/Leonidas-king-of-Sparta (opens in a new tab); Encyclopaedia Britannica).

Established: Carneia as a received constraint on the 480 levy. Established: a sourced public record of The Carneia festival constrains the Spartan levy at the time of Thermopylae under -0480-07-15.

If a number is not in the two records named above, it is not supplied here.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

Confidence is stated on the impact path, not hidden in adjectives. Mixed effects of The Carneia festival constrains the Spartan levy at the time of Thermopylae are separate paths.

Causal path

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

  1. ActorLeonidas I
  2. contributed toFactThe Carneia festival constrains the Spartan levy at the time of Thermopylae
  3. strengthensDriverPolitical Polarization
  4. weakensIndicatorHaving a say in government

Cite this page

Factrail. (2026). The Carneia festival constrains the Spartan levy at the time of Thermopylae. Factrail. https://factrail.ai/facts/leo-carnea-480

https://factrail.ai/facts/leo-carnea-480

Accessed 16 October 2026.

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

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