Civilization.
But the idea that a government first forms and then bestows upon us the gift of civilization would be incorrect. I suppose you're being flippant since you didn't bother to justify that comment.
This is because beyond a certain amount of complexity (e.g. on the path to civilization), you better have a government what orchestrates favorable outcomes.
One way to frame it might be a chicken/egg problem, as you say, but that just begs the question whether one can meaningfully exist without the other?