This is a mash-up:
Take the feel and ideas of Classic Traveller;
Add the history and scale of the Terran Trade Authority;
Toss in a few aliens from Star Frontiers to flesh out the setting;
And complete with the Prose Descriptive Quality ("PDQ") mechanics.
Voila! It's the Traveller Trade Authority.
The Gilead Subsector map is something I threw together for a game I was running.