Basically add up all the sides... And that's the perimeter don't forget to add your units
The main reason, which I have read about in some books, is that they do not permit industrial building on those islands, so who would want to live there? It is a very bare bones society.
True The U.S. stayed neutral until japan bombed pearl harbor. Once Japan Bombed us we joined the war
pipe lines are used world wide
It doesn't, it gets colder as you go higher.