The Persians, led by their king had a unified command and strategic direction. The independent Greek city-states had their own motivations and self-protection competing with the push to unify. In the Persian invasion, the Persians use their fleet to threaten the cities which therefore kept their armies at home to defend their city. It was the agreement of the Greek cities to concentrate on destroying the Persian fleet (achieved at Salamis) which allowed the Greeks to bring out their armies, accept Spartan command, and present a unified army which won the land battle at Plataea and so ended the Persian invasion.
The Greeks were entirely capable of developing their own culture and politics, borrowing from Egyptian culture, and gained no inspiration culturally and politically from the Persian attempts on Greece.
Polynesian is a joke, isn't it. Assuming it is Peloponnesian War:
The two wars combined devastated the Greek world. Athens gained and lost its empire, and became a second rate power. Sparta lost so much of its military manpower that it was displaced as leading city by Thebes.
But they were all so weakened that Persia was able to dominate, and ordered the cities to cease their constant warfare. This weakness paved the way for the dominance of Macedonia, which used the Greek cities to bolster its armies for the capture of the Persian Empire by Alexander the great.
The Greek cities were absorbed into Macedonian kingdoms established by Alexander's successors, and eventually the Roman Empire.
For 50 years, the Greek city-states ended their habitual fighting amongst eachother and united militarily to ward of the Persian attempts to enforce peace in the region. When the Persians agreed to stay out of the Greek world, the Greek city-states went back to their usual devastating fighting each other for the next 50 years until Macedonia moved in and brought them under control.
Persian Wars.
The Persian-Greek wars stretched from 499-449 BCE in several phases. There were not two distinct wars.
The Persian army, and the armies of the Greek city-states.
The Persian king, and first Sparta then Athens on the Greek side.
The Persian Empire and various combinations of Greek city-states.
Persian wars.
persian wars.
Herodotus
Persia and Greek city-states.
449 BCE.
To prevent Persian takeover of the Greek cities in Europe as had already happened to the Greek cities in Asia.
The Persian Empire versus a varying coalition of Greek city-states.