190

By place

Roman Empire

• A part of Rome burns, and Emperor Commodus orders the city to be rebuilt under the name Colonia Commodiana.
• A Roman road crosses the Alps by the Simplon Pass.

  China

• First year of the Chuping era of the Chinese Han Dynasty.
• The Campaign against Dong Zhuo begins.
• Luoyang is burned and plundered by the forces of Dong Zhuo. The court is moved to Chang'an.

  Parthia

• Osroes II, controlling Media, claims the throne of the Parthian Empire. King Vologases IV of Parthia puts down the rebellion and restores order.

  By topic

Arts and sciences

• Cleomedes teaches that the moon does not glow on its own, but rather reflects sunlight.

  Economics

• Egypt is impoverished due to an inflation rate of 100% during the previous decade.
• The percentage of silver in the Egyptian denarius is lowered from 90% to 70%.