That's a bit fanciful on a broader scale though, isn't it? Empires of all descriptions expanded around the globe over the centuries partly due to war and violence. Two of the largest geo-political entities today (China and Russia) are violent to their domestic detractors and remain in power.
Royal and so-called noble families are in situ in many countries around the world (and occupy tracts of land and real estate as well as eercising considerable influence) courtesy of wars fought centuries ago by their ancestors. Some countries gained independence by using violence against their oppressors which has therefore resulted in solutions of various descriptions. The list goes on.
Lines on maps have been drawn and internationally recognised following.
And in this particular let's not forget that the USA was established on the back of violence to what then were indigenous peoples - and the attachment to weaponry in the States has its roots in that violent past.