Spring – Sultan Abu Yusuf Yaqub ibn Abd al-Haqq and Muhammad II, ruler of Granada, agree to a truce with King Alfonso X (the Wise) for two years. Before Abu Yusuf leaves, Muhammad's secretary addresses a poem to Abu Yusuf, expressing fear of Castile's power and appealing for Marinid's continued support. Later, Abu Yusuf lands at Alcázar Seguir on January 19. This ending the first Marinid invasion in Al-Andalus (modern Spain).[1]
June – King Rudolf I declares war on his rival Ottokar II. After 6 months of campaigning, Ottokar surrenders all his lands (including Austria and Styria) except Bohemia and Moravia. Rudolf makes Vienna his capital, marking the beginning of the Habsburg Dynasty, which will last until 1918.[2]
England
Spring – King Edward I (Longshanks) orders the people of Bayonne in Gascony (as part of the only English possessions in France) to provide Castile with warships "to resist the Saracens by sea", but he excuses himself from personal participation against the Marinid invasion in Spain because of his wars in Wales and his plan to lead a Crusade to the Holy Land.[3]
June 15 – Remnants of the Chinese Song court in Fuzhou province conduct the coronation ceremony for Prince Zhao Shi to become Emperor Duan Zong (until 1278).
The mountain fortress Alamut Castle (Eagle's Nest) is again captured by the Mongols from a Nizari force under Shams al-Din Muhammad.[5][6]
The Americas
A severe 23-year drought begins to affect the Grand Canyon area, eventually forcing the agriculture-dependent Puebloans (or Anasazi) to migrate out of the region.[7]
Merton College, Oxford, is first recorded as having a collection of books, making its Library the world's oldest in continuous daily use.[8]
Economy
Henry of Ghent (or Henricus) becomes the last major theologian to openly consider annuities as a usurious contract. The end of the debate allows for the expansion of the budding practice of renten emission, to become a staple of public finance in northwestern Europe.[9]
^Joseph F. O'Callaghan (2011). The Gibraltar Crusade: Castile and the battle for the Strait, p. 69. ISBN 978-0-8122-2302-6.
^Hywel Williams (2005). Cassell's Chronology of World History, p. 148. ISBN 0-304-35730-8.
^Joseph F. O'Callaghan (2011). The Gibraltar Crusade: Castile and the battle for the Strait, p. 71. ISBN 978-0-8122-2302-6.
^Seignobos, Robin (2012). The other Ethiopia: Nubia and the Crusade (12th and 14th century), pp. 307–311. ISSN 0066-2127.
^Wasserman, James (2001). The Templars and the Assassins: The Militia of heaven, p. 115. ISBN 978-1-59477-873-5.
^Virani, Shafique N.; Assistant Professor Departments of Historical Studies and the Study of Religion Shafique N. (2007). The Ismailis in the Middle Ages: A History of Survival, a Search for Salvation, p. 32. Oxford University Press, USA. ISBN 978-0-19-531173-0.
^O'Connor, Letitia Burns (1992). The Grand Canyon, pp. 16–19, 30–32. Los Angeles: Perpetua Press. ISBN 0-88363-969-6.
^"Library & Archives - History". Oxford: Merton College. Archived from the original on May 13, 2012. Retrieved May 8, 2012.
^Munro, John H. (2003). "The Medieval Origins of the Financial Revolution". The International History Review. 15 (3): 506–562.
^"Blessed Gregory X | pope | Britannica". www.britannica.com. Retrieved May 10, 2022.