The Expansion Region when in reference to the Nymean Ascendancy is a large group of planets that were annexed after the Vagaari War. This area is comprised of the Rimward areas of the Ascendancy along the border with the Horothrium Hegemony. While Oblis and Weilb are the most populated planets in this region, the most influential planet is Taiphath due to its being the center for the Tetral Order, many of the Corsucanti survivors and foreigners, and being host to the Forth Fleet's command center in the region.