Merv is sacked with a received mass killing in the Khwarezm war
In 1221 Merv was sacked in the Khwarezm war under Chinggis's overall command, Tolui commanding in the received division. In the causal graph this event weakens Humanitarian Access, a driver that strengthens People Internally Displaced by Conflict and Violence (IDMC) — an improving welfare path.
Read the full account
In 1221 Merv was sacked in the Khwarezm war under Chinggis's overall command, Tolui commanding in the received division. Later huge integers are not certified here. Genghis Khan's documented role is: Tolui's column sacked Merv in the received division of command. Later chroniclers give huge numbers that this catalog does not certify as a unique integer.
Context
Chroniclers had incentives to shock. Sharing the sack with Tolui is required. The setting of Merv is sacked with a received mass killing in the Khwarezm war is the public file around 1221-02-01. Driver humanitarian-access 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 path from Merv is sacked with a received mass killing in the Khwarezm war on 1221-02-01. Huge later integers remain later integers. The welfare reading on this path is worsening.
Shared responsibility is part of Merv is sacked with a received mass killing in the Khwarezm war. Naming Genghis Khan does not delete co-authors, institutions, or later transmitters. The lag from 1221-02-01 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.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Genghis Khan
PersonDirect responsibility
responsibility level 0.64 · verified
Tolui's column sacked Merv in the received division of command. Later chroniclers give huge numbers that this catalog does not certify as a unique integer.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactMerv is sacked with a received mass killing in the Khwarezm war
- weakensDriverHumanitarian Access
- strengthensIndicatorPeople Internally Displaced by Conflict and Violence (IDMC)
impact weight 0.65 · Effect from 1 February 1221 · verified
Huge later integers remain later integers.
Strengthens · Relationship strength 0.33 (weight 0.65 × strength 0.5)
Observed
69M people (stock, end-of-year) · 28M above the normal line (2025)
Worse than normal3 readings, 2023–2025: rose from 68M people (stock, end-of-year) to 69M people (stock, end-of-year).
Above normal = worse
Evidence
The sources behind this fact and its verification state.
- 1.Encyclopaedia Iranica — Čengīz KhanEncyclopaedia Iranica · High credibility · verified
- 2.Britannica — Genghis Khan, Kereit warEncyclopaedia Britannica · High credibility · verified
What the sources establish
Official locator: Encyclopaedia Iranica — Merv, Mongol sack neighbourhood at https://www.iranicaonline.org/articles/cengiz-khan (opens in a new tab) (Encyclopaedia Iranica). Independent locator: Britannica — Genghis Khan, Merv at https://www.britannica.com/biography/Genghis-Khan (opens in a new tab) (Encyclopaedia Britannica). Official carrier: Encyclopaedia Iranica — Merv, Mongol sack neighbourhood (https://www.iranicaonline.org/articles/cengiz-khan (opens in a new tab); Encyclopaedia Iranica). Independent carrier: Britannica — Genghis Khan, Merv (https://www.britannica.com/biography/Genghis-Khan (opens in a new tab); Encyclopaedia Britannica).
Established: a sourced public record of Merv is sacked with a received mass killing in the Khwarezm war under 1221-02-01 for Genghis Khan. Established: a sourced public record of Merv is sacked with a received mass killing in the Khwarezm war under 1221-02-01.
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. Medium confidence on scale, high on occurrence. Mixed effects of Merv is sacked with a received mass killing in the Khwarezm war are separate paths.
Causal path
How this event connects to drivers and indicators in the graph.
- ActorGenghis Khan
- contributed toFactMerv is sacked with a received mass killing in the Khwarezm war
- weakensDriverHumanitarian Access
- strengthensIndicatorPeople Internally Displaced by Conflict and Violence (IDMC)
Cite this page
Factrail. (2026). Merv is sacked with a received mass killing in the Khwarezm war. Factrail. https://factrail.ai/facts/gk-merv-1221
https://factrail.ai/facts/gk-merv-1221
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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