The History of Jijo is long and complicated.
The Buyur occupied this world for at least a million years. They later moved on. Half a million years later, the g'Kek arrived. They abandoned their tech and adopted a primitive lifestyle. The treaki followed, roughly 2000 years BPE.
Next were the Glaver. The Qheuens were next, followed by the Hoon, the Urs and lastly Humans, 200 BPE.