1347 CE
A year defined by the arrival of the Black Death in Europe, carried by Genoese trading ships from the Crimea to Sicily and the Italian mainland, and the fall of Calais to the English after a prolonged siege.
Geopolitics & Diplomacy
- The Siege of Calais ended in August when the starving garrison surrendered to King Edward III of England, who spared the city after the famous intercession of the Burghers of Calais.
- Calais became an English possession and strategic foothold on the French coast, remaining under English control for over two centuries.
Conflict & Security
- Cola di Rienzo seized power in Rome in May, proclaiming himself Tribune of the People and attempting to restore the ancient Roman Republic, though his rule would prove short-lived.
Health & Medicine
- The Black Death arrived in Europe in October when Genoese trading ships carrying plague-infected rats docked at Messina in Sicily, having sailed from the Crimean port of Caffa.
- The plague, caused by the bacterium Yersinia pestis, had already devastated Central Asian and Middle Eastern populations before reaching Europe through trade networks.
- By the end of the year, the Black Death had spread from Sicily to the Italian mainland, reaching Genoa, Venice, and other major port cities through maritime trade routes.
- The speed with which the plague spread through Mediterranean ports demonstrated the interconnectedness of medieval trade networks, as infected ships carried the disease from port to port.
Climate & Environment
- Atmospheric carbon dioxide concentration was approximately 272 parts per million, as later confirmed by ice core analysis.
Culture & Society
- The estimated world population was approximately 370 million, on the brink of the most devastating pandemic in recorded human history.