From Star Trek to Star Wars, from Dune to Foundation, science fiction has a rich history of exploring the idea of vast intergalactic societies, and the challenges facing those living in or trying to manage such societies. The stories in Federations will continue that tradition.
What are the social/religious/environmental/technological implications of living in such a vast society? What happens when expansionist tendencies on a galactic scale come into conflict with the indigenous peoples of other planets, of other races? And what of the issue of communicating across such distances, or the problems caused by relativistic travel? These are just some of the questions and issues that the stories in Federations will take on.
Here's the link to the submission guidelines.