June 13 – The Catholic Monarchs issue the ordinance of Medina del Campo, creating a money system based on the copper maravedí, creating the peso of 34 maravedis. In the next three centuries, this system will dominate international payments. It will be used in almost all parts of the Americas and large parts of Asia. It is the basis for a number of modern currencies, including the U.S. dollar.
October 6 – Sten Sture the Elder is forced to resign and end his 27-year term as Regent of Sweden. King John of Denmark and Norway is acknowledged by the estates as King of Sweden and formally elected on October 18, restoring the power of the Kalmar Union.
^Larsson, Lars-Olof (1997). Kalmarunionens tid: Från drottning Margareta till Kristian II. Stockholm. p. 362.(Swedish).
^Palme 1950 s. 209-210, 212-218, Suvanto 1952 s. 265-269, 271, 275-277, Julku 1987 s. 237, Finlands historia I s. 395, 397, Harrison 2005 s. 496-497, Sveriges historia 1350–1600 s. 197.(Swedish).
^The World Almanac and Encyclopedia. Press Publishing Company (The New York World). 1901. p. 106.
^Elie-Charles Flamand (1968). The Renaissance. Heron. p. 196.
^ abcPalmer, Alan; Palmer, Veronica (1992). The Chronology of British History. London: Century Ltd. pp. 135–138. ISBN0-7126-5616-2.
^Bengt Liljegren (2004). Rulers of Sweden. Historiska Media. p. 63. ISBN9789185057634.
^Annals of the Four Masters - Part 13. Annals of the Four Masters. Retrieved April 17, 2018. Great famine prevailed through all Ireland in this and the following year, so that people ate of food unbecoming to mention, and never before heard of as having been introduced on human dishes.