990s
The 990s decade ran from January 1, 990, to December 31, 999.
| Millennium: | 1st millennium |
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Events
990
By place
Europe
- June 15 – Empress Theophanu dies of an illness at Nijmegen, and is buried in the Church of Saint Pantaleon in Cologne. Empress Adelaide of Italy assumes regency over her grandson, 10-year-old King Otto III.
- Al-Mansur, de facto ruler of Al-Andalus, conquers the Castle of Montemor-o-Velho (modern Portugal), expanding the Umayyad Caliphate of Córdoba.
- The city of Lund, Sweden is founded, during the reign of the Danish king Sweyn Forkbeard (approximate date).
Africa
- The Ghana Empire takes the Berber town of Aoudaghost (modern Mauritania) as the West African nation makes further gains.
- Construction of the Al-Hakim Mosque by orders of the Fatimid vizier Gawar Al-Siqilli begins in Cairo (modern Egypt).
By topic
Religion
- June – The Pax Ecclesiae, an edict by the Catholic Church, is promulgated. Held at three synods in different parts of southern and central France (at Charroux, Narbonne and Puy), it attempts to outlaw acts of war against non-combatants and the clergy.
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Significant people
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