Finishing species.tbl is overrated. Plus, most of us can’t write good, except for Rhymes, who writes very well. Here’s my stab at it:
The EA was comprised of most of the remnant of the old GTA remaining in Sol. Its battle strategy still focuses on destroyer-sized vessels to be the decisive factor in winning battles. The Martian Hegemony quickly became the R&D and tech arm of the EA and its focus is keeping the EA technologically superior. Powerful warships with costly components that prevent regular production and mass implementation. The Transjovian Despotate is a loose confederation of fringe worlds in Outer Sol, with its government structured around Jupiter, that was never truly subjugated by the EA. Raw resources are shuttled into the inner systems from the lawless fringes of Uranus, Neptune, and beyond through the massive processing yards around Saturn and trade hubs around Jupiter. Their piratical battle doctrine is based around smaller command ships and specialized cruisers with nanojump capability. Strike fast and hard, but leave when destroyers show up.