KelThuzad0398

I think something's wrong with the TEC Rebel AI, it's not building any ships except a protev colony frigate and it won't advance beyond colonizing a few planets.

Some factions really hate one another which makes it extraordinarily difficult to make alliances with them, even with all the tech researched. A few combinations will be nearly impossible, even with a filled diplomacy tech tree. You must avoid war with the faction at all costs to make sure that you don't lose diplomacy for military action. If you find that your relationship with them is high enough but theirs is not with yours, you can give them missions to give the mission relati