Historical
1381: England - The Peasants Revolt led by Wat Tyler create anarchy throughout England burning a number of public buildings and beheading the archbishop of Canterbury, King Richard puts down the riot and Tyler is killed
1381: Italy - War of Chioggia, Venetian fleet under Vittoria Pisano defeat the Genoans, It begins the golden age of Venice
1384: Uzbekistan - Timur captures Herat, Sistan, Rayy, and Il-Khanid (the capital of Sultaniyeh)
1385: Portugal - Battle of Aljubarrota (central Portugal), Portugese under King John I defeat the Crown of Castile under King John I and his allies, the victory makes Portugal an Independent country
1389: Turkey - Turkish army under Sultan Murad I defeats Serbs under Prince Lazar at Kossovo Field (meaning "field of the black birds"), bringing Turkish rule to the area which lasts until the Balkan War of 1913, just before the battle, a Serb posing as a deserter brought before Sultan Murad produces a dagger and stabs the Sultan to death, he is Immediately killed, as is Serb leader Lazar who is captured in the battle
1392: China - Yi Songgye, with the aid of the Ming rulers of China, seize the Korean throne from the Koryo dynasty, the Yi dynasty lasts until 1910
1395: Mongolia - Timur sacks Sarai Berke, ending central control of the Mongol Golden Horde
1396: Turkey, Hungary - Ottomans defeat Hungarians at Nicopol
1397: Sweden, Norway, Denmark - Magaret, Queen of Sweden, conquers Denmark and Norway then forms the Kalamar League, a union of all three countries