The United Earth government in Star Trek looks almost as unrealistic as Faster Than Light travel.
A united earth government isn't contrary to any physics law I'm aware of, but that would take a strong political will, not just from leaders but from the general population, as well as a very long time.
The European Union has been a work in progress for 70 years to integrate different countries into one political system. Lots have been done, but it's still far from a small-scale United Earth. Every country hold onto its sovereignty, and a consensus from all 27 member states is required for many things, so it's moving rather slowly.
The United Earth government in Star Trek looks almost as unrealistic as Faster Than Light travel.
A united earth government isn't contrary to any physics law I'm aware of, but that would take a strong political will, not just from leaders but from the general population, as well as a very long time.
The European Union has been a work in progress for 70 years to integrate different countries into one political system. Lots have been done, but it's still far from a small-scale United Earth. Every country hold onto its sovereignty, and a consensus from all 27 member states is required for many things, so it's moving rather slowly.