Should humanity be unified under a single government? Let's say such a universal government exists - namely a global communist regime. The relation between this government and the people is the same as the relation between a small communist government and a small village. Each individual nation is similar to each person in a communist community. Each nation requires different amounts of resources to keep running, similar to how each person has different needs. And we know from experience that communism doesn't work on a national scale, so why should it on a global scale?