WORLD HISTORY

Detailed explanation-1: -For a time during this conflict, Athens controlled not only Megara but also Boeotia. But at its end, a massive Spartan invasion of Attica forced Athens to cede the lands it had won on the Greek mainland, and Athens and Sparta recognized each other’s right to control their respective alliance systems.

Detailed explanation-2: -The Delian League, founded in 478 BC, was an association of Greek city-states, numbering between 150 and 330, 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.

Detailed explanation-3: -After the second Persian invasion of Greece was halted, Sparta withdrew from the Delian League and reformed the Peloponnesian League with its original allies. Many Greek city-states had been alienated from Sparta following the violent actions of Spartan leader Pausanias during the siege of Byzantium.