Directory

1478 CE

A year defined by the Pazzi conspiracy against the Medici in Florence, Ivan III's annexation of Novgorod, and the establishment of the Spanish Inquisition under Ferdinand and Isabella.

Geopolitics & Diplomacy

  • The Pazzi conspiracy on April 26 attempted to overthrow the Medici family in Florence, killing Giuliano de' Medici but failing to eliminate Lorenzo, who survived and tightened his grip on the city.
  • Pope Sixtus IV was implicated in the Pazzi conspiracy, having given tacit approval to the plot, leading to a dramatic rupture between Florence and the papacy.
  • Ivan III of Moscow completed the annexation of the Republic of Novgorod, stripping the city of its independence and deporting many of its leading families.
  • Ferdinand and Isabella obtained papal authorization to establish the Spanish Inquisition, creating a powerful instrument for enforcing religious orthodoxy in their kingdoms.
  • Louis XI of France consolidated his territorial gains from the collapse of Burgundy, integrating the duchy and other acquisitions into the French crown.
  • Maximilian of Habsburg worked to defend his wife Mary of Burgundy's remaining territories in the Low Countries against French pressure.
  • The Kingdom of Aragon under John II supported Ferdinand's growing authority in Castile, strengthening the union of the two Iberian crowns.

Conflict & Security

  • The Pazzi conspiracy resulted in a violent aftermath in Florence, with conspirators publicly executed and the Pazzi family destroyed as a political force.
  • Pope Sixtus IV, outraged by Florence's treatment of the conspirators, including the execution of the Archbishop of Pisa, placed Florence under interdict and declared war.
  • The Pazzi War erupted as Naples and the papacy allied against Florence, while Milan and Venice offered varying degrees of support to Lorenzo de' Medici.
  • Ivan III's conquest of Novgorod was accompanied by mass deportations and the confiscation of property from the city's leading merchant and boyar families.
  • The War of the Castilian Succession effectively ended with the Treaty of Alcacovas negotiations, confirming Isabella and Ferdinand's position.
  • Maximilian of Habsburg conducted military operations to defend the Burgundian Netherlands against French incursions.

Economy & Finance

  • The Pazzi conspiracy and subsequent war disrupted Florentine commerce and banking, undermining the city's economic stability.
  • The Medici bank suffered from the political crisis, with the Rome branch particularly affected by the break with the papacy.
  • The Spanish Inquisition's establishment created economic consequences, as the threat of persecution led some converso merchants to flee Castile.
  • Antwerp grew in commercial importance, benefiting from its strategic location and attracting merchants from across the continent.

Technology & Infrastructure

  • William Caxton published Chaucer's Canterbury Tales at Westminster, one of the most significant early publications in the English language.

Climate & Environment

  • Atmospheric carbon dioxide concentration was approximately 273 parts per million, as later confirmed by ice core analysis.

Culture & Society

  • Lorenzo de' Medici's survival of the Pazzi conspiracy and his subsequent consolidation of power in Florence strengthened his role as a patron of Renaissance culture.
  • The Spanish Inquisition's establishment marked a significant development in the relationship between religious authority and state power in the Iberian Peninsula.
  • Sandro Botticelli and other Florentine artists continued to produce works of extraordinary quality under Medici patronage.
  • Construction of the Sistine Chapel in Rome neared completion, preparing the space that would later receive its famous frescoes.
  • The estimated world population was approximately 450 million, with slow growth continuing in most inhabited regions of the world.