- All life on the planet Zetar is extinguished in a war. Only about a hundred individuals survive as energy patterns representing their thoughts. (TOS: "The Lights of Zetar")
- circa 1000
- Gint, the first Grand Nagus, codifies Ferengi cultural values in a book he calls the Rules of Acquisition. (DS9: "Bar Association", "Body Parts")
- On Earth, Irish warriors led by King Brian Boru defeat invading Vikings at the Battle of Clontarf. Brian Boru is killed by the Vikings during the battle. (DS9: "Bar Association")
- First Crusade captures Jerusalem. (TOS: "The Squire of Gothos"; DS9: "Q-Less"; VOY: "The Killing Game")
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- [×] Timeline (1 P)