WW I was a war of overtly imperialist European nations unleashing nearly a century of pent up aggression against each other which had been building for decades. When you get right down to it, really down to it, it was in America’s best interests that Germany lost that war. I don’t really think it was our place to get involved. A veteran of that war, whose name escapes me, wrote a famous story call War is a Racket which can sum up much of why we got involved in that war. I don’t know what a war where an archduke was assassinated had anything to do with us, except for purely economic ones. WW II was different, the Allies at the time requested our aid over and over again and nearly suffered annihilation. It would be best if we returned to an isolationist stance, but the reality of our situation dictates otherwise.