Economic interdependence is also a big factor. If you depend on someone selling you things or buying them from you, you have a lot more to lose by invading them.
It has some truth to it, but it doesn't survive looking at European history. In 1913 Germany and Britain were each other's largest trading partners, but a year later they ended up fighting each other in WWI. They fought again in WWII. Nuclear deterrence is a better explanation of post-WWII peace.
Yep. People want to believe this, because it means the world will generally become more peaceful as it becomes more integrated. But the numbers just don't hold up -- the closest trading partners are just as willing to go to war as anyone else.
Well to be correct also the parent said "is also a big factor" so Id say there are like 10 big factors (or dunno) and society should ensure countries are linked and allied by those factors.
All this proves is that economic interdependence doesn't completely prevent war. Who knows how much more violent the 20th century would have been without it.
It has some truth to it, but it doesn't survive looking at European history. In 1913 Germany and Britain were each other's largest trading partners, but a year later they ended up fighting each other in WWI. They fought again in WWII. Nuclear deterrence is a better explanation of post-WWII peace.