# Danubian wars against Sarmatians and Carpi are fought as tetrarchic frontier killing-and-resettlement

Date: 289

## The fact

The late-280s–290s Sarmatian/Carpi wars are the dated Danube instrument. [Diocletian](/people/diocletian)’s documented role is: He campaigned on the Danube. Captives and resettled groups share the harm. Do not merge with Egypt 297 or with Nisibis 298. Danube versus Nile versus Tigris. Later editors, printers, and excavators remain named where they appear. Diocletian's documented role is: He campaigned on the Danube. Captives and resettled groups share the harm.

## Context

Middle Danube. Tetrarchy not yet fully four in the earliest years. Maximian is occupied in the West. Named others on the file: Unnamed Sarmatian and Carpi groups; unnamed legionary labour. The public setting is the file around 0289-01-01. Unnamed clerks, soldiers, printers, or later editors may appear without becoming this instrument. The instrument stays Danubian wars against Sarmatians and Carpi are fought as tetrarchic frontier killing-and-resettlement. The setting of Danubian wars against Sarmatians and Carpi are fought as tetrarchic frontier killing-and-resettlement is the public file around 0289-01-01. Shared offices, unnamed crews, printers, or later editors may appear without becoming this instrument. Driver [humanitarian-access](/drivers/humanitarian-access) is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

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

## Evidence and sources

Livius and Britannica independently record repeated Danubian campaigns in Diocletian’s reign. Official: Livius — Diocletian (https://www.livius.org/articles/person/diocletian/; Livius.org). Independent: Britannica — Diocletian (https://www.britannica.com/biography/Diocletian; 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: Livius — Diocletian (https://www.livius.org/articles/person/diocletian/; Livius.org). Independent carrier: Britannica — Diocletian (https://www.britannica.com/biography/Diocletian; Encyclopaedia Britannica).

Official or archival record: Livius — Diocletian (https://www.livius.org/articles/person/diocletian/; Livius.org).

## Significance

Frontier war. Welfare reading worsening. The attached mechanism is Frontier wars of reconquest are a humanitarian-harm path. 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.

Confidence is stated on the impact path, not hidden in adjectives. Do not merge with Egypt 297 or with Nisibis 298. Danube versus Nile versus Tigris. Mixed effects of Danubian wars against Sarmatians and Carpi are fought as tetrarchic frontier killing-and-resettlement are separate paths.

## What is established and what is not

Cluster of years, not a single pitched-battle tape. Established: a sourced public record of Danubian wars against Sarmatians and Carpi are fought as tetrarchic frontier killing-and-resettlement under 0289-01-01. Established: a sourced public record of Danubian wars against Sarmatians and Carpi are fought as tetrarchic frontier killing-and-resettlement under 0289-01-01.

Shared responsibility is part of Danubian wars against Sarmatians and Carpi are fought as tetrarchic frontier killing-and-resettlement. Naming Diocletian does not delete co-authors, institutions, or later transmitters. The lag from 0289-01-01 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.

The attached driver is humanitarian-access. The welfare reading used in this dossier is worsening. That reading is an impact-path choice, not a property stored on the Fact itself.

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

## People

- Diocletian: https://factrail.ai/people/diocletian

## Drivers

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

## Sources

- https://www.britannica.com/biography/Diocletian
- https://www.livius.org/articles/person/diocletian/

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/di-sarmatian-campaigns