Imperial Japan and Nazi Germany were major industrial centers with large cities, educated populations, newspapers, trains, etc. They were vastly richer than peasant societies like China or Mexico.
Modern USA hardly even engages in full scale warfare since starting one of the deadliest wars of the late 20th century, except for the time we started the deadliest war of the 21st century?
Your reasoning strikes me as kind of post-hoc, but maybe I'm mistaken .. could you say more precisely what you think causes countries to go to war, in a way that I could take a random country and see if it fits the criteria?
For a somewhat objective example, look at the life expectancy around those years ... Japan and especially Germany are near the top both before and after the war https://en.wikipedia.org/wiki/List_of_countries_by_past_life...
Modern USA hardly even engages in full scale warfare since starting one of the deadliest wars of the late 20th century, except for the time we started the deadliest war of the 21st century?
Your reasoning strikes me as kind of post-hoc, but maybe I'm mistaken .. could you say more precisely what you think causes countries to go to war, in a way that I could take a random country and see if it fits the criteria?