Sasanian EmpirePolitical
Ctesiphon, capital of the Sasanians
Ardashir I overthrows the Parthians and rules his new Persian empire from Ctesiphon on the Tigris.
The Sasanians kept Ctesiphon as their winter capital and the seat of the King of Kings, though their homeland lay on the Iranian plateau. The Mesopotamian province of Asōristān — 'the land of the Assyrians' — became the demographic and economic core of the empire, its canals and cities feeding the Persian state for four hundred years.
