Achaemenid Satrapies > Caucasian Albania
Median and Achaemenid eraAccording to one hypothesis, Caucasian Albania was incorporated in the Median empire. Persian penetration into this region at a very early date is connected with the need to defend the northern frontier of the Iranian empire. Possibly already under the Achaemenids some measures were taken to protect the Caucasian passes against the invaders however the foundation of Darband and series of gates is traditionally ascribed to the Sassanid empire. Albania was incorporated in the Achaemenid empire and were under the command of the satrapy of Media in the later period.