805

By place

Byzantine Empire

• Siege of Patras: Local Slavic tribes of the Peloponnese lay siege to the city of Patras, with aid from an Arab fleet. A Byzantine relief army under Skleros, military governor from Corinth, is sent and retakes the city. The captured Slavs in Patras are made slaves, and a church is dedicated to St. Andrew.

  Europe

• Battle of Canburg: The Franks under Charles the Younger, son of emperor Charlemagne, defeat the Slavs near the present-day town of Kadaň and conquer Bohemia.
• Krum, ruler of the Bulgarian Empire, conquers and destroys the Eastern part of the Avar Khaganate.
• The first known mention of Magdeburg, founded by Charlemagne, is made.

  Britain

• King Egbert of Wessex formally establishes kingship over Devon, after an integration over many years. Dumnonia is reduced to cover only the Cornish in Cornwall.

  Asia

• February 25 - Emperor De Zong dies after a 25-year reign, in which the fanzhen is controlled by military governors or jiedushi, who often ignore imperial decrees. He is succeeded by his son Shun Zong, who becomes ruler of the Tang Dynasty.
• August 31 - Shun Zong issues an edict to yield the throne to his son Xian Zong, because of an illness, taking for himself the title of "Retired Emperor". Xian is confronted with political disputes in Zi Prefecture.
• Priest Saichō, patriarch of Tendai Buddhism, visits China and introduces tea to Japan on his return.

  By topic

Religion

• The Palatine Chapel in Aachen is consecrated by Pope Leo III.