(1) Amphictyonic League vs. (2) Crisæans.

Cause: People of the city of Crisa (port of Delphi) oppress pilgrims to the oracle.

Leader: (1) Cleisthenes of Sicyon.

Chief Action: (1) Siege of Crisa.

Results: For the first time Greek cities join in an effective league. Crisa destroyed.

PERSIAN WARS.—500-479 B. C.

(1) Persians vs. (2) Greeks.

Cause: Aid given by Athens and Eretria to revolting Ionic Greek cities, leading to burning of Sardis, 497 B. C.

a. First Persian Expedition—493 B. C.

Leader: (1) Mardonius.