Pretty much every star sector within human space possessed an MTA and CFA presence.
As the most powerful public trans-galactic organization that meddled in human space, the Mech Trade Association always sought to plant their flag in the most central and notable locations in a given star sector.
For example, in the Komodo Star Sector, both the Friday Coalition and the Hexadric Hegemony coveted the Centerpoint System during the start of the colonization period. It's great location, abundant exotics and energetic suns could all provide enormous boosts to any nascent state looking to supercharge their industrial development!
Yet from the moment the MTA dropped in and claimed Centerpoint for its own purposes, the Fridaymen and Hexers obediently avoided the location and fought for the surrounding star systems.
This pretty much happened in every star sector.