January 20 Christian II succeeds Johan I as Danish/Norwegian king March 11 Giovanni de' Medici chosen Pope Leo X March 27 Spaniard Juan Ponce de Leon discovers Florida April 2 Florida discovered, claimed for Spain by Ponce de Leon April 8 Explorer Juan Ponce de Leon claimed Florida for Spain June 6 Battle at Novara: Habsburgers vs Valois August 16 Battle at Eguinegatte/Guinegate: Maximilian and Henry III beat France September 9 Battle of Flodden Fields; English defeat James IV of Scotland September 23 King Henry III and Emperor Maximilian conquer Doornik September 25 Vasco Nunez de Balboa is 1st European to see Pacific Ocean