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Athens founds Amphipolis as a colonial strongpoint on the Strymon

In 437/36 BCE Athens founded Amphipolis on the Strymon under Hagnon. In the causal graph this event strengthens Forced-Displacement Scale, a driver that strengthens People Internally Displaced by Conflict and Violence (IDMC) — a worsening welfare path.

Read the full account

In 437/36 BCE Athens founded Amphipolis on the Strymon under Hagnon. Pericles’s documented role is: Hagnon founded Amphipolis with Athenian and allied settlers. Pericles’ city sent the colony; local Edonians were displaced; he did not uniquely survey the site. Amphipolis is a named colony. Later editors, printers, and excavators remain named where they appear. Pericles's documented role is: Hagnon founded Amphipolis with Athenian and allied settlers.

Context

Earlier failed attempts at Ennea Hodoi, unnamed settlers, and Edonian land already sit in the file. A colony is not unique authorship of Macedon. Later Philip II is not 437. Named others on the file: Hagnon as founder, unnamed settlers, and local Edonians share the foundation. The public setting is the file around -0437-01-01. The instrument stays Athens founds Amphipolis as a colonial strongpoint on the Strymon. The setting of Athens founds Amphipolis as a colonial strongpoint on the Strymon is the public file around -0437-01-01. Driver forced-displacement-scale is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

Shared responsibility is part of Athens founds Amphipolis as a colonial strongpoint on the Strymon. Naming Pericles does not delete co-authors, institutions, or later transmitters. The lag from -0437-01-01 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.

Why it matters

Complex shared foundation. Welfare reading worsening. 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.

Who was responsible

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

  • Pericles

    Person

    Direct responsibility

    responsibility level 0.4 · verified

    Hagnon founded Amphipolis with Athenian and allied settlers. Pericles’ city sent the colony; local Edonians were displaced; he did not uniquely survey the site.

What changed

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

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Britannica — Amphipolis, Athenian colony 437 BCEEncyclopaedia Britannica · High credibility · verified
  2. 2.Britannica — PericlesEncyclopaedia Britannica · High credibility · verified
What the sources establish

Britannica and Thucydides independently date Amphipolis as an Athenian colony of 437/36. Official: Britannica — Pericles, Amphipolis (https://www.britannica.com/biography/Pericles-Athenian-statesman (opens in a new tab); Encyclopaedia Britannica). Independent: Britannica — Amphipolis, Athenian colony 437 BCE (https://www.britannica.com/place/Amphipolis (opens in a new tab); 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: Britannica — Pericles, Amphipolis (https://www.britannica.com/biography/Pericles-Athenian-statesman (opens in a new tab); Encyclopaedia Britannica). Independent carrier: Britannica — Amphipolis, Athenian colony 437 BCE (https://www.britannica.com/place/Amphipolis (opens in a new tab); Encyclopaedia Britannica).

Established: 437/36 Amphipolis foundation. Not established: that 424 Brasidas is this same act. Established: a sourced public record of Athens founds Amphipolis as a colonial strongpoint on the Strymon under -0437-01-01.

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

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

Confidence is stated on the impact path, not hidden in adjectives. Amphipolis is a named colony. Mixed effects of Athens founds Amphipolis as a colonial strongpoint on the Strymon are separate paths.

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

Causal path

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

  1. ActorPericles
  2. contributed toFactAthens founds Amphipolis as a colonial strongpoint on the Strymon
  3. strengthensDriverForced-Displacement Scale
  4. strengthensIndicatorPeople Internally Displaced by Conflict and Violence (IDMC)

Cite this page

Factrail. (2026). Athens founds Amphipolis as a colonial strongpoint on the Strymon. Factrail. https://factrail.ai/facts/per-amphipolis-437

https://factrail.ai/facts/per-amphipolis-437

Accessed 16 October 2026.

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