when we blame America for terrorism, we are not addressing the elephant in the room, and that is the deep rooted ideology of exclusivity and oppression. Though one cant deny involvement of the US in the acts, but they are limited to funding and funding only(incase of alqaeda and Taliban, to oppose the rising influence of ussr). And funding is done to the war mongering brainwashing terror leaders, so what else other than the religious motivation, motivates the youth to give up their lives.