Directory

226 CE

A transformative year in the history of the Near East as Ardashir I overthrew the last Parthian king and established the Sassanid Empire, which would become Rome's greatest rival for the next four centuries.

Geopolitics & Governance

  • Ardashir I consolidated power and formally established the Sassanid Empire after his victory over the last Parthian king Artabanus V, ending the Arsacid dynasty that had ruled for nearly five centuries.
  • Ardashir crowned himself King of Kings of Iran and established his capital at Ctesiphon, on the banks of the Tigris River in Mesopotamia.
  • The Sassanid Empire claimed to restore the glory of the ancient Achaemenid Persian Empire and adopted Zoroastrianism as the state religion, establishing a powerful priestly hierarchy.
  • The new Sassanid state posed an immediate and serious threat to Rome's eastern frontier, replacing the relatively disorganized Parthian confederation with a centralized and aggressive imperial power.

Culture & Society

  • The Sassanid court promoted Zoroastrian orthodoxy and the use of Middle Persian as the language of administration and literature, fostering a Persian cultural renaissance.
  • The world population was approximately 255 million.

Climate & Environment

  • Atmospheric carbon dioxide concentration was approximately 278 parts per million, as later confirmed by ice core analysis.