The Americans are generally cheerful, happy and informality, but also pride and ambitious. Although the United States is considered as an extremely open and free country with more than 80% of Americans are immigrants of European descendants and the 50% of the population is nominally Christian and Catholic, the United States is a multi-ethnic country with some rules and taboos which need to pay attention and comply. There are many taboo topics in America that are not normally discussed. For example, a bride who is noticeably pregnant on her wedding day was historically considered a taboo topic that was quietly whispered about but not officially acknowledged. The following America travel tips of dos and donts will help you to avoid embarrassment and troubles when traveling to America and maximise the enjoyment of your trip.