I don’t know how many countries in the world there is, but every country they have their own cultural. So I come from Vietnam I want to compare the cultural between Vietnam and Unite State. In US it is easy to make a friend to each other, they are honest and nice. The American when you look at them, they often smile to you. They don’t mine who are who and where are you from? They always say hello to every stranger they meet. In Vietnam that is a problem because when you look at them, it make them discomfort and sometime they express mad. In addition, some youth when you look at them, instead say hello they say a bad word and then they will get fighting.