Place
Achaeans (tribe)

Overview
The Achaeans (; Greek: Ἀχαιοί, romanized: Akhaioí) were one of the four major tribes into which Herodotus divided the Greeks, along with the Aeolians, Ionians and Dorians. They inhabited the region of Achaea in the northern Peloponnese, and played an active role in the colonization of Italy, founding important cities such as Sybaris, Kroton and Metapontum. Unlike the other major tribes, the Achaeans did not have a separate dialect in the Classical period, instead using a form of Doric.
Overview adapted from Wikipedia (CC BY-SA 4.0; see the article history for authors).
Place in the tradition
Part of Pythagoreanism.