c. 508 BC
Cleisthenic constitutional reforms
Law & constitutions · Constituciones y ciudadanía
Tradition places Cleisthenes’ reforms reorganizing civic units and Athenian representation in 508/507 BCE. They are a reference point in the constitutional history of the polis, although citizenship and participation remained restricted by sex, status, and origin.
Precision, calendar, and review
- Start
- year · approximate
- Calendar and convention
- Historical-era years; the source calendar is not identified. No conversion of days is assumed.
- Year zero
- The scale goes from 1 BCE to 1 CE without year zero. Changing era names changes labels only.
- Documentary review
- Date not recorded
Reading the date: point event.
Sources
- www.britannica.com (opens in a new tab)
Source provenance and scope
- Publication date
- Pending verification: the source could not be accessed
- Bibliographic date checked
- 2026-09-23
The correspondence between this reference and individual claims has not yet been itemized.
This record is an editorial synthesis. Consult the sources to check claims and their limits. Chronological relationships alone do not establish causation.