May 21st is the 141st day of the year (142nd in leap years) in the Gregorian calendar. There are 224 days remaining until the end of the year.
403 – King Henry III of Castile sent an embassy to the court of Timur (Tamerlane) to discuss a potential alliance between Timur and Castile against the Ottoman Empire.
1856 – A crowd of about 800 pro-slavery Americans ransacked the town of Lawrence, Kansas.
1894 – The Manchester Ship Canal, linking Manchester in North West England to the Irish Sea, officially opened, becoming the world’s largest navigation canal at the time.
1911 – Mexican President Porfirio Díaz and the revolutionary Francisco Madero signed the Treaty of Ciudad Juárez to end the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
1998 – Indonesian President Suharto resigned as a result of the collapse of support for his three-decade-long rule.
Loretta Lynch turns 59
Lisa Edelstein turns 52
The Notorious B.I.G would have turned 46
Fairuza Balk turns 44
Ricky Williams turns 41
Tom Daley turns 24