Classicly

A Slave is a Slave is a science fiction story written by Henry Beam Piper, an American science fiction author. He wrote many short stories and several novels.

The Galactic Empire is slowly 'welcoming' into the family of civilized worlds those systems so far off in the backwater of the galaxy that they have been overlooked and ignored for the past 500 years or so. This is purely routine work because every planet offered the chance has eagerly accepted the invitation.