1410 CE
A year defined by the decisive Battle of Grunwald that shattered Teutonic Order dominance in northeastern Europe, continued Ming dynasty maritime ambitions, and shifting power across medieval kingdoms.
Geopolitics & Diplomacy
- The Kingdom of Poland and the Grand Duchy of Lithuania formed a joint military alliance under King Wladyslaw II Jagiello to confront the Teutonic Knights, culminating in the largest medieval battle in European history.
- The Treaty of Torun was negotiated in the aftermath of the Battle of Grunwald, though the Teutonic Order retained most of its territorial holdings despite its crushing military defeat.
- King Martin I of Aragon died on May 31 without a legitimate heir, triggering the Interregnum of Aragon and a succession crisis that would consume the Crown of Aragon for two years.
- The Kingdom of Scotland was governed by Robert Stewart, Duke of Albany, serving as regent for the captive King James I, with Albany exercising effective royal authority amid competing noble factions.
Conflict & Security
- The Battle of Grunwald on July 15 saw the combined Polish-Lithuanian forces decisively defeat the Teutonic Knights, killing Grand Master Ulrich von Jungingen and much of the Order's leadership.
- An estimated 39,000 Polish-Lithuanian troops engaged approximately 27,000 Teutonic Knights and their allies at Grunwald, making it one of the largest battles of medieval Europe.
- Following the victory at Grunwald, Polish-Lithuanian forces besieged Marienburg Castle, the Teutonic Order's headquarters, but failed to capture the heavily fortified stronghold.
- Heinrich von Plauen organized the defense of Marienburg Castle against the Polish-Lithuanian siege, rallying the remaining Teutonic Knights and eventually being elected the new Grand Master.
- The Siege of Marienburg lasted from July to September before King Wladyslaw II Jagiello withdrew his forces, allowing the Teutonic Order to regroup and retain its capital.
- Samogitian nobles rose in revolt against Teutonic rule following the Battle of Grunwald, seeking to permanently unite their territory with the Grand Duchy of Lithuania.
- Civil conflict continued in the Kingdom of France as the Armagnac-Burgundian rivalry intensified, with both factions competing for control of the mentally incapacitated King Charles VI.
Economy & Finance
- The Teutonic Order's defeat at Grunwald disrupted trade routes in the Baltic region, temporarily affecting the flow of amber, grain, and timber from Prussia.
- Mining operations in Central Europe expanded, particularly silver extraction in Bohemia and Saxony, providing crucial revenue for regional rulers and fueling monetary circulation.
Technology & Infrastructure
- Gunpowder weapons saw increased use at the Battle of Grunwald, with both sides deploying bombards and early cannon alongside traditional cavalry and infantry formations.
- The construction of Milan Cathedral continued, showcasing the International Gothic style with its elaborate tracery, flying buttresses, and thousands of statues and spires.
Science & Discovery
- The Prague astronomical clock, installed in 1410 on the Old Town Hall, became one of the oldest functioning astronomical clocks in the world, displaying astronomical data and calendar information.
Climate & Environment
- Atmospheric carbon dioxide concentration was approximately 272 parts per million, as later confirmed by ice core analysis.
Culture & Society
- The University of Krakow experienced a period of growth following the Polish victory at Grunwald, attracting students and scholars from across Central and Eastern Europe.
- The estimated global population stood at approximately 362 million, with China, the Indian subcontinent, and Europe comprising the most densely inhabited regions.