From what I understand, they first spawned in US1 till they disappeared or disbanded (not sure). Don't know much about US2. US3 everybody ganged up on them and they fell apart. US5 they basically went up against a foe they were not skilled enough to beat which is most of the reason why O_O is switching the world around from TLI being number 1 to them being number 1. Also for US7, poor planning on their part which lead to their disbanding. Really, lots of trial and error, but I must say they are losing their edge with many new tribes that are filled with skill popping up and turning against them. If I had to say what their largest failure is I'd say not many people trust them due to how much they use dirty tactics that have made them a target. Also, many tribes tend to make them their kill target first to avoid them being a threat or using anything dirty against them. TLI can get pretty strong if they are left to snowball, but they seem pretty squishy if you beat them up enough. This is just from my observation though so do not take it as total facts, merely observations. I could be wrong, but I've been in enough world's that I can say that's how it mostly goes from what I have seen.