No Jack, extreme nationalism does not cause wars and never has.  Wars are caused by either greed for natural resources and or territory, or to fight off tyranny.  It is interesting that you used the founding fathers as an example yet your argument contradicting your statement. What you are describing is extreme colonization, not "extreme nationalism".  And if you think for one moment that a centralized government controlled by a hand full of people will lead to world peace, you are being very naive. As we all know, power corrupts and absolute power corrupts absolutely!