Imperial Union of Planets

The Imperial Union of Planets was a mirror universe equivalent of the United Federation of Planets (in one version of Star Trek: Arcadia continuity). It was often referred to as "the (new) Empire", as it was styled upon policies and attitudes of the Terran Empire. Founded by members of the Terran Rebellion which sprang up against the Klingon-Cardassian Alliance in the 2370s, the IUP swiftly overran the Alpha Quadrant, eventually toppling the Alliance and "reclaiming" the status of the Terran Empire as the dominant power in the quadrant.