1351 CE
Edward III of England institutes the Treason Act 1351, defining treason in English law. It remains unrepealed into the 21st century. The Ayutthaya Kingdom is established by King Uthong (Ramathibodi I) in modern-day Thailand. He begins to propagate Theravada Buddhism as the state religion. Firuz Shah Tughlaq succeeds Mohammad Tughlaq as ruler of the Delhi Sultanate. At this time, the Samma dynasty in Sindh (part of modern-day Pakistan) breaks away from the Sultanate.
Geopolitics & Diplomacy
Conflict & Security
- January 14 – Edward III of England institutes the Treason Act 1351, defining treason in English law. It remains unrepealed into the 21st century.source
- March 23 – Firuz Shah Tughlaq succeeds Mohammad Tughlaq as ruler of the Delhi Sultanate. At this time, the Samma dynasty in Sindh (part of modern-day Pakistan) breaks away from the Sultanate.source
- March 26 – War of the Breton Succession: Combat of the Thirty – Thirty chosen knights each, from the Kingdoms of France and England, fight to determine who will rule the Duchy of Brittany; a Franco-Breton victory is assured by the squire Guillaume de Montauban.source
- April 1 – Hundred Years' War: Battle of Saintes. – The French are defeated by the English.source
- April 8 – Hundred Years' War: Battle of Taillebourg. – The French are defeated by the English.source
- The Red Turban Rebellions break out in China, leading to permanent weakening of the Mongolian-run Yuan dynasty.source
Religion & Belief
Technology & Infrastructure
- The region of Vantaa in Finland is first mentioned (as Helsinge).source
Climate & Environment
- The Statute of Labourers deals with a labour shortage caused by the Black Death.source