User:Goalgetter9
"The one exclusive sign of thorough knowledge is the power of teaching."
On this day: May 31
- 455 – Petronius Maximus, ruler of the Western Roman Empire, was stoned to death by a mob as he fled Rome ahead of the arrival of a Vandal force that sacked the city.
- 1223 – Mongol invasion of Kievan Rus': Mongol forces defeated a Kievan Rus' army at the Kalka River in present-day Ukraine.
- 1468 – Cardinal Bessarion (pictured) announced his donation of 746 Greek and Latin codices to the Republic of Venice, forming the Biblioteca Marciana.
- 1935 – An earthquake registering 7.7 Mw struck Balochistan in British India, now part of Pakistan, killing between 30,000 and 60,000 people.
- 2013 – A tornado struck Central Oklahoma, killing 8 people and injuring more than 150.
- Albertino Mussato (d. 1329)
- Joseph Grimaldi (d. 1837)
- Dina Boluarte (b. 1962)
- Mbaye Diagne (d. 1994)