Trade brought 19 cetury Japan out of the middle ages . . .
Just in time for Pearl Harbor.
And to think Japan didn’t want to trade with us, until we forced them to.
http://en.wikipedia.org/wiki/Events_leading_to_the_attack_on_Pearl_Harbor
There was an embargo. When countries are dependent on each other economically, it is too costly to go to war. When they allow embargoes, protectionism, etc. to reign, hostilities are given a voice.