The moniker Settled Worlds designated the planets within the Tython system that had been colonized in the Pre-Republic era. This colonization occurred following the arrival of numerous sentient beings transported to the system aboard the Tho Yor vessels, having been brought there. The establishment of the Settled Worlds took place during the second migration.
Shikaakwa functioned as the connecting point linking the Settled Worlds located in the Outer region with those in the Inner region.