900
Encyclopedia : 9 : 90 : 900 : 900
- This article is about the year 900. For other uses, see 900 (number).
| Years: 896 897 898 899 - 900 - 901 902 903 904 | |
| Decades: 870s 880s 890s - 900s - 910s 920s 930s | |
| Centuries: 8th century - 9th century - 10th century | |
Events
- Persian scientist, Rhazes, distinguished smallpox from measles in the course of his writings. Holding against any sort of orthodoxy, particularly Aristotle's physics, he maintained "the conception of an 'absolute' time, regarded by him as a never-ending flow".
- Gyeonhwon formally establishes the kingdom of Hubaekje in southwestern Korea.
- Merchants from southwest Asia and India settle on the east-African coast, trading gold, beads and metal for ivory and slaves.
- Harold I of the Yngling or Scilfing dynasty subdues the petty kings of Norway and conquers the Orkney and Shetland islands.
Births
- Abu Jafar Khazeni, Persian astronomer and mathematician
Deaths
- August 13 - Zwentibold, last King of Lotharingia (b. 870)
- Donald II, King of the Scots and Picts
- Fulk the Venerable, Archbishop of Rheims, assassinated by Count Baldwin II of Flanders
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