The dark mirror universe is one of several parallel realities next to what is commonly termed as the mirror universe where there is a militaristic Bajoran-dominated governmental authority controlling Bajor, Earth, Betazed and surrounding space through the use of the powerful Bajoran Militia.
Bajor was occupied by the Cardassian Union before being liberated. Following the end of the occupation, Bajor formed the Bajoran Empire, Bajor was accepted, and ultimately became an influential member world. By the late-24th century, Bajor's people were freed from work by the existence of replicator technology and the large number of slaves. Bajorans have devoted themselves to the development of the arts, small business, or hobbies. Intendant Kira Nerys is the unquestioned ruler of Bajor and the Bajoran system and she rules from her office on Deep Space 9.
The Bajorans were allies with the Terrans from Earth and the Spider People from Arachnia. The Bajorans were allies with the Betazoids from Betazed. The Bajorans had overthrown the Cardassian Union prior to 2370 and had become increasingly aggressive towards the Cardassians. Less than six months after its establishment, the Bajoran Empire suffered an attempted coup when an extremist faction known as the Alliance for Global Unity, or the Circle, attempting to seize power. General Krim Aldos, commander of the Bajoran Militia, was a member of the Circle and allowed it to march on Ashalla. Aldos was later exonerated for his actions when he turned upon the Circle when their Cardassian connections became clear. In 2374, the Empire had to deal with another attempted coup by the extremist faction known as the Alliance for Global Unity, or the Circle, attempting to seize power. Colonel Kira was able to destroy the Alliance for Global Unity once and for all, the Bajoran Empire remained in power.