Federation

The United Federation of Planets was an interstellar federal republic of the Star Trek universe, composed of planetary governments that agreed to exist semi-autonomously under a single central government based on the principles of universal liberty, rights, and equality, and to share their knowledge and resources in peaceful cooperation, scientific development, space exploration and defensive purposes. It was founded by the Humans, Vulcans, Andorians, and Tellarites.

One of the most powerful interstellar states in known space, it encompassed 8,000 light years.