cultural shock

I like this experience about cultural shocks because it is very common to find people around the world with different customs and traditions. In some cases, people think your own customs are right and the rest are wrong, but it is so interesting to know the much as possible about this and it is very important to have a wide perspective with the disposition to learn other things. In the fact of the grammar, I could remember the use of which, that and who, They allow to substitute the subject in a sentence which is useful to avoid say the same words all time.