Traveling problems

At this time in life people started to travel around the countries for businesses or else for visiting. But the problem that some people have is that people don't know how to deal with other people. I think this is the biggest problem, because there are different cultures in this world, and their treatment or the way they are thinking is different from the others, so when people travel, they sometimes have problems with the people who are from different countries, because of misunderstanding or doing something that is normal where the visitor is from and it is strong where the citizen is from. Also the body language is different from country to country, so I think this is the second problem, because sometimes people can understand you by the body language, so all the people when they are ready to describe something or having a conversation, they use their body language to let the other person get the point that he wants to send to them. But when people are traveling and use their body language in the other country, sometimes they will have trouble with the other people because their meaning for some of the body language is different than the meaning in their country, so it might be a bad meaning for sme of the body languages. People should understand what to do and be easy when they travel to other country so they won't have mistakes of misunderstanding from somebody or use something whose meaning is not bad in their country, but it's bad in the country they're in.