Favoured by its proximity to two great waterways and by its two ports, Nisaea on the Saronic and Pegae on the Corinthian Gulf, Megara took a prominent part in the commercial expansion of Greece from the 8th century onwards, and for two hundred years enjoyed prosperity out of proportion to the slight resources of its narrow territory.
In 424 they nearly captured Megara, in collusion with a democratic party within the town, and succeeded in securing Nisaea, which they held till 410.
On land their general Myronides beat off two Corinthian attacks on Megara, which had been further secured by long walls drawn between the capital and its port Nisaea, nearly a mile distant.
17) carefully distinguishes Solon's Megarian War from a second in which Peisistratus was no doubt in command, undertaken between 570 and 565 to recapture Nisaea (the port of Megara) which had apparently been recovered by the Megarians since Solon's victory (see Sandys on The Constitution of Athens, ch.
Against these losses the retention of Euboea, Nisaea and Pegae was no compensation; the land empire was irretrievably lost.
Nisus was the eponymous hero of the harbour of Nisaea, and local tradition makes no mention of his betrayal by his daughter.
Corinth did not regain Sollium and Anactorium, while Megara and Thebes respectively were indignant that Athens should retain Nisaea and receive Panactum.