I just played this scenario as Japan. It's been a while. I played a peaceful space race game, by expanding south into the empty islands near Japan, and after Astronomy I placed about ten cities in North America for production, which the islands were weak on.
Anyway I had a tech lead, at Noble, so I spaced out around 1970 while displaying the leadership abilities of Lech Walensa. Fun game, if you enjoy peaceful expansion. Not for the warrior though.