You can narrow down to the end of the war to approx 1996 when Khan was overthrown.
The end of Khan's war, sure. But the overthrowing of Mussolini didn't actually end any wars. Or the (first) overthrowing of Napoleon, for that matter. The superman business might have been a fairly small part of the bigger conflict.
CHAKOTAY: Sub-space technology shouldn't exist for another hundred years or so. Which is curious since I thought for TNG that warp drive (2063) is subspace technology. I guess not?
I guess 70 years is "100 or so".
Which would still mean that Cochrane's first flight would not be preceded by lesser experiments in subspace technology. And that's a bit strange.
Timo Saloniemi
Mussolini was not the last of the axis leaders. The equivalent would be the emporer of Japan. Khan's overthrow was the end of the Eugenics Wars (and the last world war.)
Strange for sure on the subspace dating.