Part of the usual explanation is that they abolished their military after their civil war in the 40s: http://en.m.wikipedia.org/wiki/Military_of_Costa_Rica http

Part of the usual explanation is that they abolished their military after their civil war in the 40s: http://en.m.wikipedia.org/wiki/Military_of_Costa_Rica http://en.m.wikipedia.org/wiki/Military_of_Costa_Rica