The Persian Wars started when Emperor Darius I began an invasion of Greece. What caused Darius to decide to attack Greece?

Question

A.
Greek pirates had raided Persia's merchant ships and coastal towns.
B.
Greek leaders had declared independence from the Persian Empire.
C.
Greek city-states had supported rebellions in the Persian Empire.
D.
Greek armies had attacked and taken over land that belonged to Persia.

Answer 1

The correct answer is C. Greek city-states had supported rebellions in the Persian Empire. Specifically, the Greek city-states, particularly Athens and Eretria, supported the Ionian Revolt against Persian rule, which prompted Darius I to seek retribution against Greece.