I'm not sure how that's a disproof? The claim is: if "international trade" then "war less likely". The example you've proposed is: "Europe couldn't effectivel

I'm not sure how that's a disproof? The claim is: if "international trade" then "war less likely". The example you've proposed is: "Europe couldn't effectively trade with China, and so waged war on China." The issue from the outset is the lack of international trade?