Eugenics War
The Eugenics War is a backstory event in the fictional Star Trek universe. First mentioned in the TOS episode 'Space Seed', in which it was stated that the Eugenics War was a global conflict that occurred during the mid to late 1990s. The progeny of a genetic engineering project established themselves as supermen and attempted world domination. The most notable of them, Khan Noonien Singh, conquered a quarter of the planet, mostly Asia. They ended up fighting amongst themselves and were eventaully overthrown due to their disunity. Khan, however, escaped into space with a group of his followers only to be encountered by the starship Enterprise after spending centuries in suspended animation. Much like the Butlerian Jihad in the Dune universe, the Eugenics War is the primary reason for many restrictions and prohibitions on genetic manipulation within the Star Trek Universe.At the time 'Space Seed' was written, the Eugenics War was inferred to be a large scale global conflict. However, after the very different reality of the actual 1990s, the Eugenics War is now generally described as a much quieter conflict, a secret war that occurred mostly in the shadows of the major conflicts and events of that decade with Gary Seven and his assistant being Khan's principle opponent.