The site did not require advanced state-level political organization to build.

But it did require something: some social mechanism for gathering people, motivating their participation, and directing their collective effort toward a shared goal.

Whether that mechanism was religious obligation, the authority of respected elders or specialists, the pull of competitive prestige between groups, the bonds of kinship and alliance, or some combination of all of these, we cannot directly determine.

What we can say is that it existed and that it was effective.