934 – Meng Zhixiang declares himself emperor and establishes Later Shu as a new state independent of Later Tang.
1190 – Massacre of Jews at Clifford's Tower, York.
1244 – Over 200 Cathars who refuse to recant are burnt to death after the Fall of Montségur.
1621 – Samoset, a Mohegan, visits the settlers of Plymouth Colony and greets them, "Welcome, Englishmen! My name is Samoset."
1660 – The Long Parliament of England is dissolved so as to prepare for the new Convention Parliament.
1792 – King Gustav III of Sweden is shot; he dies on March 29.
1802 – The Army Corps of Engineers is established to found and operate the United States Military Academy at West Point.
1815 – Prince Willem proclaims himself King of the United Kingdom of the Netherlands, the first constitutional monarch in the Netherlands.
1872 – The Wanderers F.C. win the first FA Cup, the oldest football competition in the world, beating Royal Engineers A.F.C. 1–0 at The Oval in Kennington, London.
1898 – In Melbourne, the representatives of five colonies adopt a constitution, which would become the basis of the Commonwealth of Australia.
1916 – The 7th and 10th US cavalry regiments under John J. Pershing cross the US–Mexico border to join the hunt for Pancho Villa.
1918 – Finnish Civil War: Battle of Länkipohja is infamous for its bloody aftermath as the Whites execute 70–100 capitulated Reds.
1924 – In accordance with the Treaty of Rome, Fiume becomes annexed as part of Italy.
1926 – History of Rocketry: Robert Goddard launches the first liquid-fueled rocket, at Auburn, Massachusetts.
1935 – Adolf Hitler orders Germany to rearm herself in violation of the Treaty of Versailles. Conscription is reintroduced to form the Wehrmacht.
1936 – Warmer-than-normal temperatures rapidly melt snow and ice on the upper Allegheny and Monongahela rivers, leading to a major flood in Pittsburgh.
1939 – From Prague Castle, Hitler proclaims Bohemia and Moravia a German protectorate.
1941 – Operation Appearance takes place to re-establish British Somaliland
1945 – World War II: The Battle of Iwo Jima ends, but small pockets of Japanese resistance persist.