When we were students of high school or college, one of our dreams were going to America and learn many things there. But for us , studying abroad was too expensive.  That wa just a dream for us.
 Now many go to the USA and the other countries for studying. That is not rare to experience foreign countries while young.
 But we thing international troubles are many now.  Maybe there are more troubles than the time we just dreamed.  People know the other world now, but troubles are many. How can we reduce the trouble ?
 Indeed, the more different people meet, the more troubles happen. People say ” we go abroad for international understanding”.
 But the truth is that more people exchange cause more troubles.  I don’t know how to cope with it.