6 events the sources record for this year, grouped by region.
What happened
China (1)
When Kuranokura no Kamomaro, the envoy sent to Bohai, took his leave, a seal letter (jisho) addressed to the king of Bohai was issued. (Nihon Kōki (Later Chronicles of Japan) 日本後紀 卷7)
Japan (1)
Naturalized Tang people, including Sūzan no Imiki Michimitsu, were poor; an order was issued to grant rice according to their circumstances. (Nihon Kōki (Later Chronicles of Japan) 日本後紀 卷7)
West Asia (1)
The Khazar princess dies on the way; the enraged king prepares for war (Al-Tabari, History of the Prophets and Kings Series III tom.2 (Arg.) [india.history.resource.86977], Annus 182)
Southern Europe (1)
Envoys of King Hadefonsus of Spain come to Aachen, bringing the booty from their capture of Olisipona (Lisbon) for the king: seven Moors, mules and armor (Royal Frankish Annals ARF(Einhard판) a.798, Kurze 1895 p.105)
Western Europe (2)
In Lent a great battle took place at Walle, in Northumbrian territory, and Alric, son of Heribert, was killed. (Anglo-Saxon Chronicle Giles/Ingram 1847 A.D. 798 항 (pg657.txt 줄 2438))
The Saxons beyond the Elbe, arrogant after killing the king's envoys, attack Abotritia, but Duke Trasco of the Abodrites meets them at Swentana and wins a great victory (in the first clash 4,000 warriors fell; the king's envoy Ebureis testifies) (Royal Frankish Annals ARF(Einhard판) a.798, Kurze 1895 p.105)