The Parthian empire was always a thorn in the side of the Roman empire.

The Parthian empire was always a thorn in the side of the Roman empire.

The Parthian empire was always a thorn in the side of the Roman empire.

The Parthian empire was always a thorn in the side of the Roman empire.

The Parthian empire was always a thorn in the side of the Roman empire.

The Parthian empire was always a thorn in the side of the Roman empire.

The Parthian empire was always a thorn in the side of the Roman empire.

The Parthian empire was always a thorn in the side of the Roman empire.

The Parthian empire was always a thorn in the side of the Roman empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

Three empires immediately come to mind: the Roman empire, the Parthian/Persian empire and the Chinese empire.

The official language of the Parthian Empire was Parthian, which is a Middle-Iranian Language (whereas Farsi is a Modern-Iranian Language). Aramaic was also commonly spoken as a vernacular in the western part of the Empire.

Because records of the Roman Empire were preserved in Europe, whereas the Parthian Empire was conquered by teh Caliphate and its records largely destroyed.

Retreating