People love to make this claim but it’s kind of impossible to prove. I could just as easily say that the Second World War itself resulted in a distaste for war, or that innovations in computers and electronics contributed to world peace. There’s just correlations, but it’s just kind of “vibes” - “oh they wouldn’t go to war because they rely on eachothers trade!” as if historically nations didn’t also have trade. Like, Venice was notoriously the trade hub of Europe in the Middle Ages and it still got invaded a whole bunch.