Anthropophany

A continuation of the polities described in Paul Elliott's Orbital 2100 (from Zozer games). Humans have reverse engineered and perfected a jump drive and begun colonizing Near Space. Finally we can go to the aliens if there are any left. The same old polities of Luna, Earth, Mars, and Cascadia (and the other small governments that could seed colonies) still exist but begin to crumble as it's applied across others star systems and havoc is wrought. Can the same polities that have held humanity together for roughly 150 years continue to exist or will the anthropophany among the stars spell its collapse. And if it collapses, what will replace it, if anything does?