However, they had no contact with their old enemies, the Republic and Jedi, until a fateful day when a hyperspace route survey ship arrived from Koros Major. For the next 2000 years the new Sith Lords created their own empire in their corner of space and even ventured beyond for slaves and other resources. The exiles found the Sith weakened after a devastating civil war, and after crushing any and all resistance convinced them that the Dark Jedi were in fact gods. They reestablished contact with the outside galaxy when another group of conquerors arrived, this time the defeated remnants of the Dark Jedi who had participated in the Second Great Schism.
Through their contact with Rakatan Infinite Empire, they had learned to be isolationist, xenophobic and brutal.
The Sith were originally a species of barbaric yet capable Force Sensitives that originated at the far end of the Outer Rim. The Great Hyperspace War was the beginning of the Sith as the premier darksider group.