There is no more deadly area in the world than the DMZ between North and South Korea. Millions of mines, guns and surveillance prevent anyone from crossing. But if tensions were to somehow stop and North and South Korea reunite into one country, it would still be almost impossible to combine their economies. Why would we not be able to use the lessons learned by the reunification of East and West Germany? Learn more about your ad choices. Visit megaphone.fm/adchoices