Around 24,000 BBY, the Eucer sector worlds of Matabre, Cortilium Major, Uthtara, Okator VIII and Ilamna were located in a stretch of space known as "the Divide," which separated the territories of the young Galactic Republic and the Tion Cluster. During the Tionese War, the Honorable Union of Desevro & Tion attacked a number of worlds in the region, including Uthtara and Okator.
During the Separatist Crisis, the sector was represented by Senator Jonas Wallen. He was involved in a gambling scandal in which he was accused of betting on which planets would secede from the Galactic Republic.