How did countries afford to stay neutral in wars, primarily WW1 and WW2?

Question

In WW2 the likes of Spain, Portugal and Switzerland remained neutral, how could these countries stay neutral?

What stopped the Axis powers from invading these countries to add to their countries?

In: 278

Answer 1

I read that the Swiss were trained as marksmen in school as a sport. All small towns were well stocked with rifles. If they were invaded the populous was told to snipe the officers. The book Aldo said that bridges were booby trapped. The was a huge deterrent. The book made plenty of sense but there was no proof of this claim.