Galactic Civilization

Galactic Civilization is connected by subspace transmissions, and various forms of faster-than-light travel.

The three major powers in the Galaxy are:
The Galactic Alliance: A governing body.
The Trade Federation: A trade regulatory body.
The Unified Security Fleet: A military/law enforcement fleet that operates in systems that are signatories to a mutual defense treaty.

Worlds/systems are part of some, all, or none of these.