Final answer:
The Persian War came to conquer all of Greece through a combination of factors, including the Greek city-states' successful defense tactics, the weaknesses of the Persian army, and the strategic coalition formed by the Greeks. The correct option is F.
Step-by-step explanation:
The Persian War came to conquer all of Greece through a combination of factors. Firstly, the Greek city-states were able to successfully defend themselves due to the viability of the phalanx, which made each Greek soldier a strong combatant.
Additionally, the Persian army consisted primarily of ineffective peasant conscripts, while the core cavalry force was always a small minority. The Greeks were able to exploit this weakness and outmaneuver the Persians in battles.
Furthermore, the Greeks formed a defensive coalition, with leaders like Sparta and Athens leading the land and naval battles respectively, which contributed to their victory.