n what sense is it now possible for a country to be ""occupied"" by an invisible invader that arrives through airwaves and wireless networks? A. It is almost impossible to block foreign countries’ satellite broadcasts and Internet transmissions. B. Spy satellites and other communications technology are increasingly advanced. C. Global positioning systems have allowed detailed mapping of previously inaccessible places. D. The U. S. government can eavesdrop on almost any form of modern communication.