# The Dacian wars close as a completed conquest with mass killing and annexation as later Dio prints it

Date: 106

## The fact

Cassius Dio in public English prints [Trajan](/people/trajan)’s two Dacian wars as a Roman conquest that ended Decebalus’s kingdom and annexed Dacia. The dated carrier is that later history, not a 106 CE casualty table. Civilian and military killing as received is a humanitarian-harm path.

It is one event.

## Context

Split Column-as-museum-access. Unique body counts are not invented here.

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. Sharing a field with them is not a reason to drop a documented act, and it is not a reason to assign later consequences done in the name after death.

Conventional reign is 98–117 CE. Dated public instruments here are later inscriptions as published, Pliny as Loeb/Perseus, Dio as LacusCurtius, and museum or UNESCO pages.

Named person as heading of the dated public instrument. Later editors, museums, printers, or offices share publication. Complex where later carriers are the surviving public file.

## Evidence and sources

LacusCurtius — Cassius Dio, Roman History and Britannica — Trajan independently describe this instrument.

Official or archival record: LacusCurtius — Cassius Dio, Roman History (https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/home.html; University of Chicago / LacusCurtius).

## Significance

Printed Dacian conquest is a humanitarian path, not an ISO 106 death register.

## What is established and what is not

Established as a dated public record of this instrument.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

The date is the date of this instrument, not a licence to back-date every later harm or benefit.

Established here: a sourced, dated public instrument with a named contribution by Trajan.

They are not a public rating.

The driver `humanitarian-access` is attached because the mechanism named in Significance follows from this instrument, not because a standing list of welfare headings needed another tick. Trajan did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. A portrait or conventional bust is not this mechanism. Allegation, reconstruction, and established occurrence stay distinct.

## People

- Trajan: https://factrail.ai/people/trajan

## Drivers

- Humanitarian Access: https://factrail.ai/drivers/humanitarian-access

## Sources

- https://www.britannica.com/biography/Trajan
- https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/home.html

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/trj-dacian-wars-dio