Well, since I'm a European, I can only talk about Europe (and the U.S) and not about China or Pakistan or Africa. Note, that with "other countries" it really depends on WHAT countries you are talking of!!
Here some examples:
- In the U.S. you can drive a hummer, which would not be acceptable to do in most of Europe. (well, you wouldn't get punished, but people would certainly dislike it, because of the huge amount of CO2 it produces.)
- In U.S.-Highschools, many students have to pray every morning. Or they have to say the "pledge of allegiance". They can actually be forced to do so. Both wouldn't be possible in Europe (especially the praying though).
- In the U.S. it's much more acceptable to be very overweight (so much, that you can barely walk, for example). In Europe, this is less acceptable and you constantly get stared at.
vise-versa:
- It's perfectly acceptable to talk about sex in school or other public facilities in Europe, whereas in America, you aren't meant to do so.
- In Europe, it's much more acceptable to be an atheist, than in the U.S.
- It's much more acceptable in Europe to smoke weed, than it is in the U.S. Because, even though it is illegal in most of Europe's countries as well, the "common" people usually don't care and are quite liberal about it.
- Death penalty is not only illegal in all of western Europe's countries, but it is absolutely not acceptable either.