Directory

1517 CE

A year defined by Martin Luther's Ninety-Five Theses igniting the Protestant Reformation, the Ottoman conquest of Egypt ending the Mamluk Sultanate, and the continued expansion of European exploration.

Geopolitics & Diplomacy

  • Martin Luther posted his Ninety-Five Theses on the door of the Castle Church in Wittenberg on October 31, challenging the sale of indulgences and sparking the Protestant Reformation.
  • Sultan Selim I completed the Ottoman conquest of Egypt, defeating the Mamluk Sultanate and absorbing its territories including Syria, Palestine, and the Hejaz into the Ottoman Empire.
  • The Ottoman conquest of Egypt gave Sultan Selim I control of the holy cities of Mecca and Medina, elevating the Ottoman sultan's claim to leadership of the Islamic world.
  • King Charles I of Spain arrived in the Iberian Peninsula to assume his inheritance, facing resistance from Castilian nobles suspicious of his Flemish advisors and foreign upbringing.
  • Pope Leo X declared a five-year truce among Christian princes to enable a crusade against the Ottoman Empire, though the initiative gained little traction among European rulers.
  • The Portuguese expanded their diplomatic network in Asia, sending an embassy under Tome Pires to the Chinese court to establish formal trade relations.

Conflict & Security

  • The Battle of Ridaniya on January 22 near Cairo was the final major engagement between Ottoman and Mamluk forces, ending in a decisive Ottoman victory and the fall of Cairo.
  • The last Mamluk Sultan Tuman Bay II was captured and executed by the Ottomans in April, ending over 250 years of Mamluk rule in Egypt.
  • Ottoman forces occupied Cairo and established military garrisons throughout Egypt, securing control over the newly conquered territory and its agricultural wealth.

Economy & Finance

  • The Ottoman conquest of Egypt brought the wealthy Nile Valley and its agricultural production under Ottoman control, significantly increasing imperial revenues.
  • The sale of papal indulgences, which Luther's theses attacked, had become a significant source of revenue for the Church, funding projects including the construction of Saint Peter's Basilica.
  • The Fugger banking family financed the indulgence sales in Germany through an arrangement with Archbishop Albert of Mainz, who used the proceeds to repay loans to the Fuggers.
  • Spanish colonial revenues from the Caribbean declined as gold deposits were depleted and the indigenous labor force dwindled from disease and exploitation.

Technology & Infrastructure

  • The printing press played a crucial role in spreading Luther's Ninety-Five Theses rapidly across Germany and beyond, demonstrating the power of print to shape public opinion.
  • Ottoman military engineers accompanied the army in Egypt, deploying artillery and fortification techniques that had proved decisive against both the Safavids and the Mamluks.

Science & Discovery

  • The Portuguese embassy under Tome Pires sailed to China, reaching Canton and initiating the first direct diplomatic contact between Portugal and the Ming Dynasty.
  • Francisco Hernandez de Cordoba led a Spanish expedition from Cuba that reached the coast of the Yucatan Peninsula, encountering the advanced Maya civilization.
  • Cordoba's expedition observed stone buildings, elaborate temples, and well-organized communities on the Yucatan coast, reporting back to Cuba on the rich civilizations to the west.
  • The University of Wittenberg gained prominence as Luther's academic home, attracting students interested in theology, classical languages, and humanist scholarship.

Health & Medicine

  • The Ottoman conquest of Egypt caused widespread suffering among the civilian population, with military operations, displacement, and disruption of food supplies affecting public health.
  • The indigenous population of the Caribbean continued to decline, with the Taino people on Hispaniola nearing extinction from European diseases and colonial exploitation.

Climate & Environment

  • Atmospheric carbon dioxide concentration was approximately 273 parts per million, as later confirmed by ice core analysis.
  • The expansion of Ottoman territory brought new regions under centralized environmental management, including the fertile agricultural lands of the Nile Delta.

Culture & Society

  • Martin Luther's Ninety-Five Theses challenged the authority of the Roman Catholic Church and initiated a religious upheaval that would reshape European society for centuries.
  • The Ottoman conquest of Egypt brought the vast cultural heritage of the Mamluk Sultanate under Ottoman control, including mosques, libraries, and artistic traditions.
  • The Fifth Lateran Council concluded its sessions in March, having failed to enact meaningful reforms that might have addressed the grievances Luther would soon articulate.
  • The printing press enabled the rapid dissemination of Luther's ideas, with copies of the Ninety-Five Theses circulating across Germany within weeks of their posting.
  • The estimated global population was approximately 496 million people, with the largest concentrations in China, the Indian subcontinent, and Europe.