One thing Harari likes about empires is that they’re far-reaching imagined orders, or ways of organizing a society to make people cooperate). He thinks that even though some people are oppressed in empires, or find it hard to integrate into pre-existing empires, being in an empire nevertheless makes people share a common language, currency, values, and identity, which makes it more likely that they’ll cooperate with others in the empire. As before, Harari stresses that cooperating with strangers is the core reason why societies flourish.