765

By place

Europe

• King Pepin III restores the papal privileges in Benevento and Tuscany territory.
• The Annals of Tigernach tell of a shortage of bread in Ireland.

  Britain

• King Æthelwald of Northumbria is deposed at Pincanheale, possibly at a gathering of his own magnates. He is succeeded by Alhred, a distant cousin of the late king Oswulf.

  Abbasid Caliphate

• The Zenata Berber tribe of Banu Ifran rebels against the Abbasid Caliphate, and creates an independent state centered around Tlemcen. Their tribal chief Abu Qurra rebuilds the city.

  By topic

Agriculture

• European writings make the first known mention of a three-field system in use in medieval Europe. The crop rotation is the practice of growing a series of different types of crops in the same area in sequential seasons. Under this system, the land of an estate or village is divided into three large fields, and makes a given section of land productive 2 years out of 3, instead of every other year.