The Periklean Age
After the Persian army left Greece, the people of the Greek cities returned home. The Athenians, who were at Troezen, Aegina and Salamis after the battle of Plataea returned and found their city in total ruin and the countryside desolated. They soon started rebuilding the city and began raising walls (478 BC). The Aeginitians immediately informed Sparta, which with the pretext, that the fortifications would help the Persians in another expedition, proposed to the Athenians to demolish them. Of course Sparta only feared the rising power of Athens.