Starfleet Records. History. United Federation of Planets. Then, in 2370, contact was made with the Dominion, the predominant ruling power over much of the Gamma Quadrant. After numerous skirmishes, misfortunes suffered by the Cardassian Union allowed for their eventual incorporation into the Dominion, and the subsequent Dominion invasion of the Alpha Quadrant. The Dominion/Cardassian forces were also joined by the reclusive but immensely powerful race known as the Breen. The ensuing war was the