The Republic had enjoyed a long period of peace during the Manderon Period, but the Koros system was rapidly becoming a problem. Although the planet Koros Major was stable, growing wealthy on carbonite exports, the other six worlds of the system were poor and increasingly lawless.
The task of uniting the Koros system was accepted by a noble famed for her military achievements. Empress Teta was the heir to Koros Major and was determined that the rest of the Koros system would share its prosperity. To that end, Teta began the Unification Wars, hoping to bring the entire system under her rule. She was ultimately successful, though she had to fight a long and bloody campaign to conquer the planet Kirrek.
Empress Teta would become known as one of the Republic's boldest commanders. The Koros system was eventually renamed after her.