Athens converted the anti-Persian league into an empire of its own at the end of the war.
This created two powerful blocs in the Greek world - the Athenian Empire and the Peloponnesian League led by Sparta. They clashed in the devastating 27-year Peloponnesian War 431-404 BCE.
Athens, which headed a coalition to oppose the Persian Empire in the latter part of the Persian War, duplicitously turned this league into an empire of its own when the war ended, and removed the league's treasury to Athens to use for its own purposes.
Which what.
After peace was agreed, Athens was able to convert the Delian League which it had led, into an Empire of its own, and brought on the 27-year Peloponnesian War which devastated the Greek world.
Alexander the Great was born a century after the end of the Persian War.
Athens, having established an anti-Persian league, continued it on after peace with the Persians, and used its funds to maintain its navy and turn the league into an empire. This brought it into conflict with the Peloponnesian League formed to counterbalance Athens' power. The result was a destructive 27 year war which devastated the Greek world.
The Persian empire.Note: Athens was also fighting with the Spartans, see the Pelopponnesian war.
She was born a century after the Persian War
The Persian War went on for 50 years, with dozens of ground battles. Which one?
Father of History is a title sometimes given to Herodotos of Halicarnassos, who lectured and wrote during the second half of the 5th Century BCE, forty years after the Persian War. He included an account of the Persian invasion in his history.
Athens converted the Delian League, which it had led against the Persians in the later part of the war, into an empire of its own.
Aegean.
In the aftermath, Athens harnessed the Asiatic Greek city-states which it had helped liberate from Persian Empire rule, into an empire of its won, and misused its strength to the point of bringing on the Peloponnesian War with the other Southern Greek city-states, a devastating 27-year war, which so weakened all of them that they became easily dominated by the rising power of Macedonia.