So so I'm assuming since this is all one solar system and space travel has been around for 300 years, all our nations will already know about eachother?

I'd certainly like the Concordat to be known, I plan to have some of them kicking around just about everywhere. I also plan on having a very diverse population with members of every species if folks don't mind.

The Concordat also offers its super advanced medical services and cybernetic implants to everyone for free to the more impoverished citizens of the Jalaryias system. Of course, people have learned that folks who receive those implants tend to be...different afterwards, so it's a bit of a gamble. Sure, the Concordat can cure your wife's incurable horrible deathly illness, but she might leave you to join them when it's done.