1454

{| align=right cellpadding=3 id=toc style="margin-left: 15px;" |- | align="center" colspan=2 | Years:
1451 1452 1453 - 1454 - 1455 1456 1457 |- | align="center" colspan=2 | Decades:
1420s 1430s 1440s - 1450s - 1460s 1470s 1480s |- | align="center" | Centuries:
14th century - 15th century - 16th century |} ==Events== * February 4 - In the Thirteen Years' War, the Secret Council of the Prussian Confederacy sends a formal act of disobedience to the Grand Master. * March 6 - Casimir IV of Poland renounces allegiance to the Teutonic Knights *March 27 - Richard Plantagenet, Duke of York becomes Protector for the insane King Henry VI of England *April 18 Treaty of Lodi: Francesco Sforza forms a triple alliance between the duchy of Milan, republic of Florence and kingdom of Naples *September 18 - In the battle of Chojnice, the Poland army is defeated by a smaller but more professional Teutonic Knights army during Thirteen Years' War. *December - King Henry having regained his sanity, the Duke of York is dismissed as Protector ==Births== * March 9 - Amerigo Vespucci (explorer), explorer and cartographer (d. 1512) ==Deaths== *July 20 - King John II of Castile (b. 1405) *John Kemp, Archbishop of Canterbury 1454 os:1454

1450s

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