The
Delian League, founded in 477 BC, was an association of
Greek city-states, members numbering between 150 to 173, under the leadership of
Athens, whose purpose was to continue fighting the
Persian Empire after the Greek victory in the
Battle of Plataea at the end of the
Second Persian invasion of Greece. The League's modern name derives from its official meeting place, the island of
Delos, where congresses were held in the temple and where the treasury stood until, in a symbolic gesture,
Pericles moved it to Athens in 454 BC.