845

Millennium:	1st millennium
Centuries:	8th century – 9th century – 10th century
Decades:	810s 820s 830s – 840s – 850s 860s 870s
Years:	842 843 844 – 845 – 846 847 848

845 by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishment and disestablishment categories
Establishments – Disestablishments

Uses of 845

March 28 - Paris is sacked by Viking raiders, probably under Ragnar Lodbrok, who collect a huge ransom in exchange for leaving.
The Vikings also sack Hamburg and Melun.
Persecution of Buddhists is started in Ancient China. More than 4,600 monasteries and 40,000 temples and shrines are destroyed. More than 260,000 Buddhist monks and nuns are forced to return to secular life.
November 22 - Count of Vannes, Nominoe, defeats the king of Francia Charles the Bald at the battle of Ballon near Redon. No more toll is taken on Brittany, and it becomes an independent state lasting for seven centuries.