North America In Two Timelines

In Poul Anderson's Tales Of The Flying Mountains, the colonized asteroids successfully rebel against North America whereas, in Anderson's Orbit Unlimited, North America has unsuccessfully rebelled against the Federation! Familiar actors exchange roles. We have known more than one Federation in sf.

I apologize for brevity but I am suddenly in a rush. Laterz.

(Meanwhile, think about North Americas and Federations.)