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statementVerified

Muhammad sends letters to neighbouring rulers as later sira dates a diplomatic round

Around 628 CE later sira dates letters from Muhammad to neighbouring rulers. Muhammad's documented role is: He is credited with letters to Heraclius, the Negus, and others. In the causal graph this event strengthens Social Cohesion, a driver that strengthens Having a say in government — an improving welfare path.

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Around 628 CE later sira dates letters from Muhammad to neighbouring rulers. Surviving objects are contested. Muhammad's documented role is: He is credited with letters to Heraclius, the Negus, and others. Bearers travelled; authenticity of surviving letter-objects is disputed.

Context

Heraclius and the Negus are the usual addressees. Sharing transmission with named bearers is required. The setting of Muhammad sends letters to neighbouring rulers as later sira dates a diplomatic round is the public file around 0628-09-01. Driver social-cohesion is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

Confidence is stated on the impact path, not hidden in adjectives. Low confidence is honest. Mixed effects of Muhammad sends letters to neighbouring rulers as later sira dates a diplomatic round are separate paths.

Why it matters

Improving path from Muhammad sends letters to neighbouring rulers as later sira dates a diplomatic round on 0628-09-01. A diplomatic-letter round is a low-confidence cohesion path because physical letters are later contested objects. The welfare reading on this path is improving.

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

Who was responsible

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

  • Muhammad

    Person

    Direct responsibility

    responsibility level 0.28 · verified

    He is credited with letters to Heraclius, the Negus, and others. Bearers travelled; authenticity of surviving letter-objects is disputed.

What changed

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

    1. FactMuhammad sends letters to neighbouring rulers as later sira dates a diplomatic round
    2. strengthensDriverSocial Cohesion
    3. strengthensIndicators (2)Having a say in government
    Improving path

    impact weight 0.25 · Effect from 1 September 628 · verified

    A diplomatic-letter round is a low-confidence cohesion path because physical letters are later contested objects.

    • Having a say in government

      via Social Cohesion

      Better

      Strengthens · Relationship strength 0.11 (weight 0.25 × 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 Social Cohesion

      Better

      Weakens · Relationship strength 0.11 (weight 0.25 × 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 Internet History Sourcebooks — Islamic history excerptsFordham University · High credibility · verified
  2. 2.Britannica — Muhammad, public Meccan preachingEncyclopaedia Britannica · High credibility · verified
What the sources establish

Official locator: Britannica — Muhammad, letters to rulers at https://www.britannica.com/biography/Muhammad (opens in a new tab) (Encyclopaedia Britannica). Independent locator: Fordham Islamic sourcebook neighbourhood for later letter traditions at https://sourcebooks.fordham.edu/islam/islamsbook.asp (opens in a new tab) (Fordham University). Official carrier: Britannica — Muhammad, letters to rulers (https://www.britannica.com/biography/Muhammad (opens in a new tab); Encyclopaedia Britannica). Independent carrier: Fordham Islamic sourcebook neighbourhood for later letter traditions (https://sourcebooks.fordham.edu/islam/islamsbook.asp (opens in a new tab); Fordham University).

Established: a sourced public record of Muhammad sends letters to neighbouring rulers as later sira dates a diplomatic round under 0628-09-01 for Muhammad. Established: a sourced public record of Muhammad sends letters to neighbouring rulers as later sira dates a diplomatic round under 0628-09-01.

Shared responsibility is part of Muhammad sends letters to neighbouring rulers as later sira dates a diplomatic round. Naming Muhammad does not delete co-authors, institutions, or later transmitters. The lag from 0628-09-01 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.

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.

Causal path

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

  1. ActorMuhammad
  2. contributed toFactMuhammad sends letters to neighbouring rulers as later sira dates a diplomatic round
  3. strengthensDriverSocial Cohesion
  4. strengthensIndicatorHaving a say in government

Cite this page

Factrail. (2026). Muhammad sends letters to neighbouring rulers as later sira dates a diplomatic round. Factrail. https://factrail.ai/facts/muh-letters-628

https://factrail.ai/facts/muh-letters-628

Accessed 15 October 2026.

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

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