Mongol sack of Baghdad
The last caliph dies: a symbolic end to Islam's golden age

The Mongol army of Hulagu stormed and sacked Baghdad, and the last Abbasid caliph, al-Musta'sim, was executed. The destruction of the caliphal capital and its libraries symbolically ended the Islamic Golden Age.
Wikipedia (Russian) · Wikipedia (English) · 13th century
Meanwhile around the world (±25 years)
Eastern Europe & Russia
- 1237–1240 Mongol invasion of Rus' — 21 years earlier
- 1240 Batu Khan takes Kiev — 18 years earlier
- c. 1242 The Golden Horde is founded — 16 years earlier
Asia
- c. 1251 The Tripitaka Koreana — 7 years earlier
- 1257 Samalas eruption — 1 year earlier
- 1271 Kublai Khan founds the Yuan dynasty — 13 years later
- 1271–1295 Travels of Marco Polo — 13 years later
- 1281 Kamikaze, the divine wind — 23 years later
Oceania
- c. 1250 The moai of Easter Island — 8 years earlier
- c. 1280 Polynesians settle New Zealand — 22 years later
Alive at the time
- Kublai Khan (aged 43)
- Alexander Nevsky (aged 37)
- Marco Polo (aged 4)
- Rumi (aged 51)
- Saint Louis (Louis IX) (aged 44)
- Rudolf I (aged 40)
- Thomas Aquinas (aged 33)
- Edward I Longshanks (aged 19)
- Osman I (aged 0)
- Henry III (aged 51)