<span>The assassination of Archduke Franz Ferdinand in the Balkan city of Sarajevo provided the Austro-Hungarian government with a pretext for crushing Serbian nationalism, something it had long desired.</span>
This is because after winning independent slave trade also was in that event, or because Europeans wanted to influence Christians into Africa.
U.S. foreign policy shifted away from "isolationism" to international involvement, since the US started to steer away from Washington's idea that it should remain as detached from foreign issues as possible.
Ignorance? perhaps bafoonary? is it what does america think of the historical significance of terrorists of what the terrorists think of america.