84 CE
Possible date of the Battle of Mons Graupius (AD 83 or 84), in which Gnaeus Julius Agricola defeats the Caledonians. The construction of the limes, a line of Roman fortifications from the Rhine to the Danube, has begun. Change from Jianchu to Yuanhe era of the Chinese Eastern Han Dynasty.
Geopolitics & Diplomacy
- Emperor Domitian recalls Agricola back to Rome, where he is rewarded with a triumph and the governorship of the Roman province of Africa, but he declines it.source
- Through his election as consul for ten years and censor for life, Domitian openly subordinates the republican aspect of the state to the monarchical.source
Conflict & Security
Religion & Belief
- Pliny the Younger is sevir equitum Romanorum (commander of a cavalry squadron).source
Economy & Finance
- Change from Jianchu to Yuanhe era of the Chinese Eastern Han Dynasty.source
Technology & Infrastructure
- The construction of the limes, a line of Roman fortifications from the Rhine to the Danube, has begun.source