In 2293 the atmosphere of Kronos was contaminated when Praxis, one of it's moons, exploded. This event was a turning point in relations between the Klingons and the United Federation of Planets, as the Klingon Empire couldn't afford to maintain their excessive military activities and deal with this new problem. Thus the two entered into an alliance which lasted (I believe) about eighty years, ending in 2372 when the Klingons attacked the Cardassians.
In 2367 the Klingon Civil War began after Chancellor K'mpec was murdered. Prior to his murder, K'mpec had named Captain Jean-Luc Picard his Arbiter of Succession. [[Star Trek/Klingon/Gowron|]] was selected, but the House of Duras opposed this decision and the war began. It was later revealed that the Romulans were backing Duras and and Duras quickly lost all support, ending the war and putting Gowron as leader of the empire.
Shortly before the end of the Dominion War, Worf murdered Gowron for using bad tactics in the war simply to hurt General Martok's political position. Worf then granted the role of Chancellor to Martok rather than taking it himself.
Leaders of the Klingon Empire include:
- Kahless the Unforgettable (Around 500ce)
- Chancellor Gorkon (????-2293)
- Chancellor Azetbur (2293-????)
- Chancellor K'mpec (????-2367)
- Chancellor Gowron ([[2367-2375)
- Chancellor Martok (2375-present)
Klingon (thlinang Hol) is also ther language spoken by the Klingons, created by Marc Okrand. There is also a [programming language] based on Klingon: Var'aq. (Qo'noS is done under the non-Klingon spelling "Kronos" because apostrophes don't work well. K'mpec and Var'aq aren't linked at all for the same reason.)