[@Irredeemable]
Yeah, you can make a Discord server.

Honestly, the population discussion is unnecessary. Population growth is hard to figure- I really only included that field for the sake of realism, and so that we could see which nations are bigger/smaller than others.

But like, from 1700 to 2000, the U.S. went from about 250k to 250 million people. That's three centuries, just like our colonies, and they didn't get anywhere near the billions. 

Plus, for most of that time America was a prosperous place with a ton of immigration; we're completely isolated and on hostile worlds. I'm not even sure most of our populations are physically possible without women giving birth to litters instead of children. 300 years is still only a handful of generations. I'm just trying to roll with so as not to put anyone out.