Directory

1415 CE

A year defined by the English victory at Agincourt, the execution of Jan Hus at the Council of Constance, and the Portuguese conquest of Ceuta that launched the Age of Discovery.

Geopolitics & Diplomacy

  • The Council of Constance continued its deliberations, adopting the decree Haec Sancta asserting the authority of a general council over the pope in matters of faith and Church reform.
  • Pope John XXIII was deposed by the Council of Constance in May after fleeing the council and being captured, removing one of the three rival claimants to the papacy.
  • Henry V of England invaded Normandy in August, laying siege to the port of Harfleur before marching his army across northern France toward Calais.
  • The Portuguese expedition to Ceuta, led by King John I and his sons including Prince Henry the Navigator, captured the Moroccan port on August 21.
  • Ferdinand I of Aragon supported the Council of Constance's efforts to end the Western Schism, withdrawing Aragonese obedience from Benedict XIII.
  • Emperor Yongle of the Ming dynasty dispatched Zheng He on his fourth major naval expedition, with a massive fleet sailing to ports across Southeast Asia and the Indian Ocean.
  • The Duchy of Burgundy under John the Fearless maintained a neutral stance regarding the English invasion of France, refusing to send troops to defend the French crown.

Conflict & Security

  • The Battle of Agincourt on October 25 resulted in a devastating English victory over the French, with Henry V's outnumbered army of longbowmen and men-at-arms destroying a much larger French force.
  • The French army suffered catastrophic losses at Agincourt, with thousands of knights and nobles killed or captured, including the Duke of Orleans and the Constable of France.
  • The Siege of Harfleur lasted from August 18 to September 22, with Henry V's forces capturing the Norman port after a grueling five-week bombardment and assault.
  • Henry V ordered the execution of French prisoners during the Battle of Agincourt, a controversial decision motivated by fears of a renewed French attack on the English rear.
  • The Portuguese capture of Ceuta on August 21 marked the beginning of European colonial expansion into Africa, establishing a permanent Portuguese foothold on the North African coast.
  • The Bedreddin revolt in the Ottoman Balkans gathered strength, with the radical preacher Sheikh Bedreddin attracting followers among discontented peasants and heterodox Muslims.

Economy & Finance

  • The cost of Henry V's French campaign placed significant strain on English finances, with parliamentary taxation and loans from London merchants funding the military expedition.
  • The Portuguese conquest of Ceuta opened new possibilities for direct access to African gold and spice trades, bypassing the traditional Muslim intermediaries of North Africa.
  • The ransoming of French nobles captured at Agincourt generated enormous wealth for their English captors, with the Duke of Orleans held for twenty-five years.
  • The Council of Constance generated substantial economic activity in the city, with thousands of delegates, merchants, and visitors requiring food, lodging, and services.
  • Mining operations in the Erzgebirge mountains on the Bohemian-Saxon border produced silver and tin, supporting the monetary systems of Central European kingdoms.

Technology & Infrastructure

  • The English longbow demonstrated its devastating effectiveness at Agincourt, with thousands of archers unleashing volleys that decimated the advancing French cavalry and infantry.
  • Portuguese shipbuilders developed improved caravel designs for Atlantic navigation, incorporating lateen sails that allowed sailing closer to the wind.
  • The construction of Brunelleschi's dome for the Florence Cathedral began, employing an innovative double-shell design that required no external centering framework.
  • Gunpowder artillery played a decisive role in the Siege of Harfleur, with English cannon breaching the town's defensive walls and compelling its surrender.
  • The Forbidden City in Beijing was substantially completed, providing Emperor Yongle with a magnificent imperial residence of unprecedented scale and grandeur.

Science & Discovery

  • Prince Henry of Portugal participated in the capture of Ceuta, beginning a lifelong interest in African exploration that would earn him the epithet the Navigator.
  • Zheng He's fourth voyage expanded Chinese knowledge of the Indian Ocean, visiting Hormuz in the Persian Gulf and ports along the coast of East Africa.
  • Italian humanist scholars including Poggio Bracciolini attended the Council of Constance, where they searched nearby monastery libraries for lost classical manuscripts.

Health & Medicine

  • Dysentery ravaged Henry V's army during the Siege of Harfleur, killing thousands of English soldiers and significantly reducing the fighting strength of the invasion force.
  • The Bishop of Norwich and other prominent figures in Henry V's army died of disease at Harfleur, demonstrating the devastating impact of camp diseases on medieval armies.

Climate & Environment

  • Atmospheric carbon dioxide concentration was approximately 272 parts per million, as later confirmed by ice core analysis.
  • Wet weather and muddy conditions at Agincourt on October 25 contributed to the French defeat, as heavily armored knights struggled to advance through the sodden battlefield.

Culture & Society

  • Jan Hus was burned at the stake on July 6 at the Council of Constance after being condemned as a heretic, despite the safe-conduct granted by King Sigismund.
  • The execution of Jan Hus provoked outrage across Bohemia and Moravia, galvanizing the Hussite reform movement and setting the stage for years of religious warfare.
  • Henry V's victory at Agincourt was celebrated across England as a triumph of English arms, inspiring patriotic literature and reinforcing the king's popular image.
  • The development of distinct national identities in England and France was accelerated by the Hundred Years War, with language, culture, and historical memory reinforcing political boundaries.
  • The estimated global population stood at approximately 368 million, with ongoing demographic recovery in regions affected by fourteenth-century catastrophes.