Itkkme technology

 As engineering thralls of the Kermac, the Itkkme were workers and engineers who took great pride in their work ethic, technology being the very best and the quality of their products. Among other items, their production lines churned out the finest T Bar cruisers and Yiee Battle ships  used by the other Galactic Council members to expand the Kermac influence and supremacy across the Universe.

 When the Kermac lost the Itkkme, they also lost the ability to build the Yiee Ships or anything else with the same quality and sophistication.[1]

   [1] The Kermac purchased Karthanian ships, and ships of other independent virtually unknown societies. But the Yiee was the Itkkme crown achievement and nothing as big or as consistent was ever built after they perished.