How did the geography of the Greek peninsula help them defeat the Persians?
A: Athenian soldiers were able to hide in the valleys.
B: The Athenians developed a more powerful navy than the Persians.
C: The Persians were unable to transport supplies into the Greek city-states.
D: The Persians were unable to cross the mountains.
A: Athenian soldiers were able to hide in the valleys.
B: The Athenians developed a more powerful navy than the Persians.
C: The Persians were unable to transport supplies into the Greek city-states.
D: The Persians were unable to cross the mountains.