Confederation of Greek city-states in the northern and central Peloponnese, refounded 280 BCE and expanded under leaders like Aratus of Sicyon and Philopoemen to become the dominant power in Greece before Rome.
Provoked the Achaean War with Rome; crushed at the Battle of Corinth in 146 BCE, after which Rome dissolved the League and destroyed Corinth as an example.
The atlas holds 3 border frames for Achaean League — the shape you scrub through changes in 280 BC · 191 BC · 166 BC.
The standard modern scholarly study of Greek federalism, including the Achaean League's structure and cohesion.