These countries and their situations were alike in several ways. For example, North Korea had ideal principles like one dictator and anyone/everyone must obey and be orderly, this is seen similarly in North Vietnam.
Both Korea and Vietnam divided into 2 after WW2 ended. As a result of the Korean and Vietnam wars, several thousands of people were killed in both countries. On the other hand, the Vietnam war lasted a lot longer, so it would be suspected, that there would be quite a few casulaties.
America sent troops to both of these countries to contain communism, and in both countries, communisn prevailed. Both countries had been under control of foreign powers up until mid 1940's.
TV forever changed the way people looked at war. The people in the US were being protected from what was really happening in Vietnam, only to realize that this war was turning our people into monsters. When it came out on live telivision, videos of American men burning down villages to the ground, people immediately retaliated and started uprisings against war, especailly the Vietnam war.