2300AD backstory?

[sic1701]

Never having seen the 2300AD backstory and history, but knowing that the setting takes place after the events of the Twilight:2000 game, does the backstory go into detail on what happened in the intervening three centuries between the events of the Twilight War and the game itself? Whether in the game rulebooks, or a Challenge magazine article, or anywhere else?

I'm interested in how they got from global nuclear war to colonising space.