The Ravaged Federation was where Ravaged Tribesmen killed each other in the border of Sanctuary to devour their genetics through Nectar. This was a prolonged process, one without any guarantee of success.
Very few will manage to train hard and influence their genetics to the extent it would create a synergic result, allowing them to eventually enter the Life Stage, which is when they would be instantly brought into the Influenced Region of Sanctuary.
After entering the Sanctuary, the Ravaged Tribesmen, now existing as Clansmen, cultivated peacefully. They drank Nectar like water and cultivated plainly, focusing on improving the harmony of their genetic makeup so that they could gradually build a stable stack through the Life Stage.