> Group formation seems to be natural way humans organize up to a state level. Not quite. There have been many alternatives to state societies in history, so s

> Group formation seems to be natural way humans organize up to a state level. Not quite. There have been many alternatives to state societies in history, so states are far from the only way to organize even largish society. That said, state societies have spontaneously arisen at least 6 times and perhaps a dozen times. And the rise of states tends to either motivate neighboring polities to form states in response or pretty inevitably get extinguished by the states. Given the frequency of spontaneous reinvention of states, and the seeming inevitability of their expansion, even if states are not the only way to organize large polities, they do seem to a local if not global maximum.