If we consider the concept of a world without a governing body, an analogy can be drawn from the current global political stage. Each state or nation on Earth could be seen as akin to an individual human. These entities interact with each other, forming alliances, establishing trade agreements, and occasionally engaging in conflicts, all without a central authority presiding over all of them.
This bird's eye view of how nations maintain diplomacy, trade, and communication, despite cultural, linguistic, and ideological differences, offers insights into the interactions of these already ungoverned entities.