Answer:
a.The war was a technical victory for Sparta. b. Athens united willing neighboring poleis into the Delian League.
Explanation:
The Peloponnesian War faced two associations of Greek city-states. The delian league, led by Athens, fought against Peloponnesian League, led by Sparta, which had Persian help. The reason that started the war was the conflict between Corinth (Sparta ally) and Corcira (Athens ally). At the end of the war, Sparta established itself as the greatest power in Greece, although Spartan hegemony was oppressive.