21 CE

Barracks are constructed for the Praetorian Guard, on the Quirinal (located on the Seven Hills of Rome). The manufacture of pens and metal writing tools begins in Rome (approximate date). The Romans create a buffer state in the territory of the Quadi, in southern Slovakia.

In the 20s, the 1st century.

Conflict & Security

  • The Aedui revolt under Julius Florus and Julius Sacrovir; the revolt is suppressed by Gaius Silius.source

Exploration & Expansion

  • The Romans create a buffer state in the territory of the Quadi, in southern Slovakia.source

Technology & Infrastructure

  • Barracks are constructed for the Praetorian Guard, on the Quirinal (located on the Seven Hills of Rome).source
  • The manufacture of pens and metal writing tools begins in Rome (approximate date).source

Culture & Society

  • Emperor Tiberius is a Roman Consul for the fourth time.source

Deaths

  • Arminius, Germanic military leader (born 18/17 BC)source
  • Daeso of Dongbuyeo, Korean king (born 60 BC)source
  • Clutorius Priscus, Roman poet (born c. 20 BC)source
  • Marcus Valerius Messalla Barbatus, Roman consul (born 11 BC)source
  • Publius Sulpicius Quirinius, Roman governor (born c. 51 BC)source
  • Wang (or Xiaomu), Chinese empress of the Xin Dynastysource
  • King Daeso of Dongbuyeo is killed in battle against the armies of Goguryeo, led by its third ruler, King Daemusin.source