AD 983: One of the Four Great Books of Song, the encyclopedia Imperial Readings of the Taiping Era is completed in 1,000 volumes, of 4.7 million written Chinese characters.
AD 926: Battle of the Bosnian Highlands: Bulgarian forces under Duke Alogobotur are ambushed and defeated by a Croatian army of King Tomislav, in the mountainous area of Eastern Bosnia.
AD 921: On 7 November, the Treaty of Bonn was signed between Charles III of France and Henry I of Germany in a minimalist ceremony aboard a ship in the middle of the Rhine not far from Bonn, recognizing the border between their two Frankish kingdoms.