I am confused about your question, because neither Truman or Eisenhower were around when Vietnam was happening...
If you clarify, I might be able to answer your question
Throughout history there are many instances of certain races believing they are superior, and in some extreme cases this leads to campaigns of genocide such as the Holocaust. The Holocaust and similar events were caused by extreme racism and prejudice. Hitler and the Nazis saw themselves as superior to all others, such as the Jewish, Gypsies, handicapped, and many others
TERTIARY is the sector that provides services to end consumers AND to the primary and secondary sectors, and is considered the most important sector in the chain. Transportation, health care, food service, retail sales, advertising, entertainment, tourism, banking, law, etc. are all examples of tertiary-level sectors.