Who were the regional governors in Persian empire?

In the Persian Empire, regional governors were known as "satraps." Appointed by the king, satraps were responsible for overseeing the various provinces, or satrapies, ensuring loyalty, tax collection, and local administration. They often had significant autonomy but were expected to report directly to the emperor, maintaining order and implementing imperial policies across their regions. The system allowed for efficient governance over the vast and diverse territories of the empire.