How do we see the Enduring Issue of Conflict affect the Greek city-states through the Greco-Persian and/or Peloponnesian Wars?

After initial Persian victories, the Persians were eventually defeated, both at sea and on land. The wars with the Persians had a great effect on ancient Greeks. or
The Athenian Acropolis was destroyed by the Persians, but the Athenian response was to build the beautiful buildings whose ruins we can still see today.

Cwould be the answer