10 events the sources record for this year, grouped by region.
What happened
China (3)
Yeongan-bukdo jeolsa Seong Jun investigates and reports on the movements of the Oljeokhap (Annals of the Joseon Dynasty 成宗實錄 二十二年 · 成宗實錄 39책 253권 12장 A면 · 기사 wia_12205007_006)
Commander-in-chief Yi Geuk-gyun reports the victory over the enemy at Gosanri Fortress (Annals of the Joseon Dynasty 成宗實錄 二十二年 · 成宗實錄 39책 256권 18장 A면 · 기사 wia_12208029_001)
Yi Su-eon, jongsagwan to the commander-in-chief of the northern expedition, brings a written report on the situation of the campaign (Annals of the Joseon Dynasty 成宗實錄 二十二年 · 成宗實錄 40책 259권 5장 B면 · 기사 wia_12211010_001)
Korean Peninsula (3)
Yeongan-bukdo jeolsa Yun Mal-son reports that the Oljeokhap are staging an uprising in collusion with insiders at Gusinpo (Annals of the Joseon Dynasty 成宗實錄 二十二年 · 成宗實錄 38책 250권 2장 B면 · 기사 wia_12202004_003)
Royal instruction to Commander-in-chief Yi Geuk-gyun to devise measures to guard the frontier against bandit gangs (Annals of the Joseon Dynasty 成宗實錄 二十二年 · 成宗實錄 39책 254권 29장 B면 · 기사 wia_12206027_003)
Pyeongan governor Yu Ji reports that bandits invaded Changseong on the first day of this month (Annals of the Joseon Dynasty 成宗實錄 二十二年 · 成宗實錄 39책 255권 18장 A면 · 기사 wia_12207013_002)
Japan (1)
Hojo Nagauji (later Soun), with 500 men including Imagawa reinforcements, crossed the Kuroseki River by night and burned Horigoe. The rebel Chachamaru fled and killed himself at Joju-in. (Rai Sanyō, Nihon Gaishi 卷之十 · part_04 줄 5)
Sub-Saharan Africa (3)
In 1491 a Portuguese ship reaches the harbour at the mouth of the Zaire river, and next day the lord of Sogno and his son are baptized (Lopes & Pigafetta, Report of the Kingdom of Congo Bk2 Ch2 (part_02 줄 97))
The Anzichi people on the islands and banks of the Zaire river revolt and kill the governors sent by the king. Prince Mani-Sundi goes to suppress them (Lopes & Pigafetta, Report of the Kingdom of Congo Bk2 Ch2 (part_02 줄 120))