AD 84
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AD 84 (LXXXIV) was a leap year starting on Thursday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Augustus and Sabinus (or, less frequently, year 837 Ab urbe condita). The denomination AD 84 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Events
= By place =
== Roman Empire ==
- Possible date of the Battle of Mons Graupius (AD 83 or 84), in which Gnaeus Julius Agricola defeats the Caledonians.{{cite web |title=Mons Graupius UChicago.edu |url=https://penelope.uchicago.edu/~grout/encyclopaedia_romana/britannia/monsgraupius/monsgraupius.html}}{{self-published inline|date=September 2024}}{{cite web |title=Mons Graupius Omni Atlas |url=https://omniatlas.com/maps/europe/840802/}}
- 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.{{citation needed|date=October 2023}}
- Pliny the Younger is sevir equitum Romanorum (commander of a cavalry squadron).{{citation needed|date=October 2023}}
- The construction of the limes, a line of Roman fortifications from the Rhine to the Danube, has begun.{{Cite web |last=Centre |first=UNESCO World Heritage |title=Frontiers of the Roman Empire – The Danube Limes (Serbia) |url=https://whc.unesco.org/en/tentativelists/6475/ |access-date=2024-04-08 |website=UNESCO World Heritage Centre |language=en}}
- Through his election as consul for ten years and censor for life, Domitian openly subordinates the republican aspect of the state to the monarchical.{{citation needed|date=October 2023}}
- Domitian increases the troops' pay by one third, thus securing their loyalty.{{Cite journal |last=Brunt |first=P. A. |date=1950 |title=Pay and Superannuation in the Roman Army |url=https://www.jstor.org/stable/40310480 |journal=Papers of the British School at Rome |volume=18 |pages=50–71 |doi=10.1017/S0068246200006152 |jstor=40310480 |issn=0068-2462|url-access=subscription }}
== Asia ==
- Change from Jianchu to Yuanhe era of the Chinese Eastern Han Dynasty.{{citation needed|date=October 2023}}{{explain|date=October 2023}}
Deaths
- Luke the Evangelist, Greek physician and martyr{{citation needed|date=October 2023}}
- Titus Flavius Sabinus, Roman consul married Julia Flavia (executed){{citation needed|date=October 2023}}