1275

## Events 
### Europe 
#### War and politics 
* April 22 – The first of the Statutes of Westminster are passed by the English parliament, establishing a series of laws in its 51 clauses, including equal treatment of rich and poor, free and fair elections, and definition of bailable and non-bailable offenses.
* Eleanor de Montfort is captured by pirates in the employ of Edward I of England to prevent her marriage to Llywelyn the Last, prince of Wales; she is used as a bargaining chip over the coming years in Edward's attempts to subjugate Llywelyn and Wales.
* Scottish forces defeat the Manx of the Isle of Man in a decisive battle, firmly establishing Scottish rule of the island.
* Third Mongol Golden Horde raid against Lithuania.

#### Culture, religion, and science 
* Jean de Meun completes the French allegorical work of fiction, *Roman de la Rose*, with a second section; the first section was written by Guillaume de Lorris in 1230.
* The verge escapement, a simple type of escapement used in clocks, is invented (exact year unknown).
* Ramon Llull establishes a school in Majorca to teach Arabic to preachers in an attempt to aid proselytizing to Moors. He also discovers diethyl ether.
* The first main survey of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is finished; it began in 1274.

### Asia 
* March – the 200,000 multiethnic troops of the Mongol-led Yuan Dynasty, headed by the Turkish commander Bayan, face a Chinese Song Dynasty army of 130,000 led by the Song Chancellor Jia Sidao. The result is a decisive victory for the Yuan Dynasty, and soon after the much-vilified Jia Sidao is stripped of rank and title, and killed by one of his own guards as he is sent to exile in Fujian by the Song court.
* Invading Mongol forces capture the Chinese city of Suzhou.
* Marco Polo purportedly visits Xanadu, Kublai Khan's summer capital of the Mongol Empire.
* The city of Kunming is made capital of the Yunnan province of the Mongol Yuan Dynasty.
* Nestorian monk Rabban Bar Sauma begin his pilgrimage from China towards Jerusalem
* Chinese astronomers observe a total eclipse of the Sun in China on March 4.

## Eras and population estimates 
* The era of the *tosafot*, Medieval commentators on the Talmud, ends (began 1100).
* The population of Bushmen in Basutoland (modern-day Lesotho) is estimated at 125,000.
* The Japanese era Bun'ei ends, and the Kenji era begins.

## Births 
* September 27 – John II, Duke of Brabant (died 1312)
* William of Alnwick, Franciscan theologian (approximate date; died 1333)
* Bartholomew de Badlesmere, 1st Lord Badlesmere (died 1322)
* Walter V of Brienne, Duke of Athens (approximate date; died 1311)
* Edward Bruce, Scottish nobleman (approximate date; died 1318)
* Dnyaneshwar, Hindu saint and poet (died 1296)
* Gediminas, Duke of Lithuania (approximate date; died 1341)
* Henry VII, Holy Roman Emperor (approximate date; died 1313)
* Mondino de Liuzzi, Italian physician and anatomist (died 1326)
* John Menteith, Scottish nobleman (approximate date; died 1323)
* Giovanni Villani, Florentine writer (approximate date; died 1348)
* Giovanni d'Andrea, Italian jurist

## Deaths 
* April 13 – Eleanor of England (born 1215)
* September 24 – Humphrey de Bohun, 2nd Earl of Hereford, Constable of England (born 1208)
* Bohemund VI of Antioch (born 1237)
* Ferdinand de la Cerda, Infante of Castile, Crown Prince of Castile