OMG I thought you were serious about asking where Vietnam is!!!
Which reminded me of an anecdote that happened last month. My 14-yr-old students had a German exam. There was an activity about verbs where they had to fill in the blanks with the correct verb tense. Well, the only German girl in the class called me to ask me something so I went over to her desk. She showed me a sentence in her exam which went like this: Woher ___________ (kommen) deine Familie? Aus Vietnam.
. I wondered what she couldn't understand about that simple sentence, when she asked me: "What's Vietnam?"