It’s all in how you look at things. We are all egocentric, the world over. What we consider rude, people from other countries wouldn’t even notice. So when traveling, especially to foreign countries, “do as the Romans do,” or at least, be considerate of the culture.

And try being considerate of visitors to our country. They won’t be totally familiar with our customs.

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Some of the behaviors we consider the height of rudeness in North America are surprisingly acceptable in other countries.

Source: 9 Rude Behaviors You Can Totally Get Away with Abroad – SmarterTravel.com