@TG:
Were the superpowers of 1500 the sizeand population of the United States?
sigh Come on TG…. tell me what you aim at, but don’t play dumb…
of course the superpowers at that time where fewer… but there was no artificial fertilizer available, and no phones, cars, computers etc…
The world has changed, true.
But: The world has got faster in more or less everything (called exponential growth … in knowledge, worldwide population etc). I don’t see how you can explain a permanent domination of one country on this basis. Rather i would expect that the rate of change in superpowers will become faster as well…