More general than that. Satraps were the equivalent of governors in the Persian empire.

Satraps (Old Persian khšaçapavan): the governors of the satrapies (provinces) of the ancient Achaemenid empire.
The title 'satrap' is older than the Persian empire: the word khšaçapavan is Median (it means 'protector of the realm') and was used to describe the vassal kings of the Median empire. The Median and Persian kings sent out officials with the title "eye of the king" to supervise their satraps.


See: http://www.livius.org/sao-sd/satrap/satrap.htm for further details.

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