Achaeans are the inhabitants of Achaea in Greece. However, the meaning of Achaea changed during the course of Ancient history, and thus Achaeans may refer to: Achaeans (Homer), a name used by Homer in the Iliad for Mycenaean-era Greeks in general. ... Achaea, the modern Greek administrative unit.

Why are they called Achaeans?

Homeric versus later use

Later, by the Archaic and Classical periods, the term "Achaeans" referred to inhabitants of the much smaller region of Achaea. Herodotus identified the Achaeans of the northern Peloponnese as descendants of the earlier, Homeric Achaeans. ... They then moved into the region later called Achaea.

Who are the argives?

The Argives were originally the inhabitants of Argos but the name later came to refer to all the Greeks.