Events

• December 16 - Emperor Go-Kameyama of Japan abdicates in favor of rival claimant Go-Komatsu, in order to end the nanboku-cho period of conflict between the Northern and Southern imperial courts.
• Goryeo Revolution 1388-1392: In present-day Korea, rebel leader General Yi Seonggye with the support of the Ming overthrows King Gongyang and crowns himself King Taejo, ending the Goryeo Dynasty and establishing the Joseon Dynasty. King Gongyang is exiled and later secretly murdered.
• Taejo of Joseon turns the fortress and trade center at Seoul into capital.
• King Jogaila of Poland and Lithuania appoints his cousin Vytautas the Great as regent of Lithuania in return for Vytautas giving up his claim to the Lithuanian throne. Vytautas replaces Jogaila's unpopular brother Skirgaila as regent.
• King Charles VI of France, later known as Charles the Mad, begins experiencing bouts of psychosis which will continue throughout his life.
• Muhammed VII succeeds Yusuf II as Nasrid Sultan of Granada (now southern Spain).
• Franciscan friar James of Jülich is boiled alive for impersonating a bishop and ordaining his own priests.
• Queen Mary of Sicily defeats an army of rebel barons.
• William le Scrope succeeds William II de Montacute as King of Mann.
• Seoan mac Pilib succeeds Tomas mor mac Mathghamhna as King of East Breifne in present day north-central Ireland.
• The city of Afyonkarahisar (now in western Turkey) is conquered by Sultan Beyazid I of the Ottoman Empire.
• Louis de Valois is created the 1st Duke of Orléans, the second time this title is created.
• Erfurt University is founded in Erfurt, central Germany.
• Penistone Grammar School, later to be one of the first community comprehensive schools in England, is founded near Barnsley, England.
• Each family holding colonized land in Anhui province has to plant 200 each of mulberry, jujube and persimmon trees.
• Entire military force of China - 1.2 million men, with 531,000 on the northern frontier in China.
  

Births