The Treaty of Brundisium partitions the Roman world between Antony and Octavian
In autumn 40 BCE the Treaty of Brundisium partitioned spheres between Antony and Octavian after Perusia. In the causal graph this event strengthens Social Cohesion, a driver that strengthens Having a say in government — an improving welfare path.
Read the full account
In autumn 40 BCE the Treaty of Brundisium partitioned spheres between Antony and Octavian after Perusia. The dated diplomatic instrument is not Actium and not the Donations of Alexandria. Mark Antony’s documented role is: He met Octavian at Brundisium and agreed a partition after the Perusine War. Octavia’s marriage sealed it; soldiers demanded peace; he did not uniquely author the terms. Later editors, printers, and excavators remain named where they appear.
Context
A pause is not unique perpetual peace. Named others on the file: Octavian, unnamed soldiers demanding peace, and later Octavia as seal share the settlement. The public setting is the file around -0040-10-01. The instrument stays The Treaty of Brundisium partitions the Roman world between Antony and Octavian. The setting of The Treaty of Brundisium partitions the Roman world between Antony and Octavian is the public file around -0040-10-01. 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. Mixed effects of The Treaty of Brundisium partitions the Roman world between Antony and Octavian are separate paths.
Why it matters
Complex shared treaty. Welfare reading improving. The attached mechanism is A dated 40 BCE settlement paused a further Italian civil war as a cohesion instrument. 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 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.
Mark Antony
PersonDirect responsibility
responsibility level 0.4 · verified
He met Octavian at Brundisium and agreed a partition after the Perusine War. Octavia’s marriage sealed it; soldiers demanded peace; he did not uniquely author the terms.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactThe Treaty of Brundisium partitions the Roman world between Antony and Octavian
- strengthensDriverSocial Cohesion
- strengthensIndicators (2)Having a say in government
impact weight 0.4 · Effect from 40 BCE · verified
A dated 40 BCE settlement paused a further Italian civil war as a cohesion instrument.
Strengthens · Relationship strength 0.18 (weight 0.4 × strength 0.45)
Observed
29.8% of population aged 16-65 years · 8.13 below the normal line (2023)
Worse than normalTwo readings: 30.2% of population aged 16-65 years (2021) and 29.8% of population aged 16-65 years (2023).
20212023 Above normal = better
Weakens · Relationship strength 0.18 (weight 0.4 × strength 0.45)
Observed
43.9 Score · 43.9 above the normal line (2024)
Worse than normal26 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.
- 1.Britannica — Mark AntonyEncyclopaedia Britannica · High credibility · verified
- 2.Perseus — Plutarch, AntonyPerseus Digital Library / Tufts · High credibility · verified
What the sources establish
Britannica and Plutarch independently date the Brundisium partition of 40. Official: Britannica — Mark Antony, Treaty of Brundisium (https://www.britannica.com/biography/Mark-Antony-Roman-triumvir (opens in a new tab); Encyclopaedia Britannica). Independent: Perseus — Plutarch, Antony, Brundisium (https://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:2008.01.0007 (opens in a new tab); Perseus Digital Library). 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: Britannica — Mark Antony, Treaty of Brundisium (https://www.britannica.com/biography/Mark-Antony-Roman-triumvir (opens in a new tab); Encyclopaedia Britannica). Independent carrier: Perseus — Plutarch, Antony, Brundisium (https://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:2008.01.0007 (opens in a new tab); Perseus Digital Library).
Established: 40 Treaty of Brundisium. Not established: that it uniquely prevented Actium. Established: a sourced public record of The Treaty of Brundisium partitions the Roman world between Antony and Octavian under -0040-10-01.
Shared responsibility is part of The Treaty of Brundisium partitions the Roman world between Antony and Octavian. Naming Mark Antony does not delete co-authors, institutions, or later transmitters. The lag from -0040-10-01 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.
- ActorMark Antony
- contributed toFactThe Treaty of Brundisium partitions the Roman world between Antony and Octavian
- strengthensDriverSocial Cohesion
- strengthensIndicatorHaving a say in government
Cite this page
Factrail. (2026). The Treaty of Brundisium partitions the Roman world between Antony and Octavian. Factrail. https://factrail.ai/facts/ant-brundisium-40
https://factrail.ai/facts/ant-brundisium-40
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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