Did the Persian Empire ever conquer Greece?

No. But they easily could have. Not in the 480s or 470s, when Greece was united against them. It was during this period where battles such as Marathon, Thermopylae, Salamis, and Plataea were fought. read more

Persians and the Greeks fought numerous wars which are known as Greco-Persian Wars but the Persians never managed to conquer Greece. Cyrus the Great conquered Ionia which would prove to be one of the many reasons why Greeks and Persians started fighting each other. read more

Finally only about a year after that, Alexander the Great and his army invaded Persia unprepared and that was the fall of the largest empire the ancient world had ever seen. Spanning from India to Greece, from Egypt to the steppes of China. read more

Persians before attacking Greece had conquered Egypt and other peoples. They were at the top of their power ; nobody could reasonably argue that Greeks would resist, but some of them Athenians particularly) did. The persian omnipotence was in fact a dressing that vanished when Greeks opposed armed resistance to them. read more