The Doradans were enslaved by the Masters of Dorada to work in underground factories, supplying the necessities and luxuries the Masters demanded. They lived their whole lives down there, being given electric shocks if they stopped working, pleasant dreams if they went to sleep on time, and horrific nightmares if they didn't. By the end of the 40th century, the Doradans were members of the Galactic Federation. (PROSE: Placebo Effect)