The first was walled cities. Another is both offensive and defensive was a fleet of warships. And a third was alliance with other cities.
-After promising Ionia, Persians supported construction of Spara military-->attacked Athenian coast
-430 BC- 1/3 Athens population & leader died of plague-->numbers=weakened, disorganized
-Serval Athenian allies joined Sparta-->lost power
Answer:
A for me
Explanation:
The Algonquins supported the British War