The answer your looking for is Nato
Most of the war was fought around the coastal cities of New England, in Massachusetts, New Jersey, and New York (notably Long Island).
Explanation:
Because it was the first big group of people who had one leader, always lived in a concrete place. Also they invented lots of new things that was more complex than those things who were invented before
this might help but isolationism is like something that keeps to itself, country stays out of foreign entanglements really non involvements