Why did Phoenician cities support the Persian Achaemenid Empire?

Following the transition of Phoenicia from Babylonian rule to the Achaemenid Empire in 538 BCE, Phoenician cities became loyal supporters of the Persian monarchs. This support was primarily driven by the fact that the Persians had overthrown the previous oppressors of the Phoenicians and reopened vital trade routes to the East, which were essential to the Phoenician economy.12

Under Persian rule, the region—comprising Lebanon, Syria-Palestine, and Cyprus—was organized into the fifth satrapy of the empire. The Phoenicians provided significant military support to the Persians; for instance, during the invasion of Greece by Xerxes I in 480 BCE, the ships of Sidon were considered the finest in the Persian fleet. Additionally, the Persian administration allowed Phoenician cities such as Arados, Byblos, Sidon, and Tyre to issue their own silver and copper coinage. While this alliance was initially strong, it eventually fractured, leading to revolts against the Persian king in the 4th century BCE.12