How did the Persian Wars affect the Greek army? OThe Greek army was destroyed.
OThe Greek army defeated the Persians.
OThe Greek army overthrew the Persian government.
OThe Greek army suffered more losses than the Persians.

PLZ HELP

The Greek army defeated the Persians.

Explanation:

The Persian Wars were a series of armed conflicts between the Greek polis and the Persian Empire, in the 5th century BC. These conflicts were initiated by the will of the Persian emperors to expand their dominions across the Mediterranean Sea, as well as to eliminate the eventual threat that the Greeks, especially Athens and Sparta, represented to their power. Although they had certain forceful victories, as in Thermopylae, the Persians never managed to turn the battle in their favor, and they were eventually defeated by the Greeks.

a is correct

hope this let me know if it is right

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.