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Americans are friendly, but in their own way. In general, friendships among Americans tend to be shorter and more casual than friendships among people from other cultures. This has something to do with American mobility and the fact that Americans do not like to be dependent on other people. Americans are open and usually eager to explain. If you do not understand certain behavior or want to know what makes Americans behave the way they do, do not hesitate to ask questions.

Traffic accidents kill 1. 25 million people each year worldwide. But the World Health Organization says they are preventable. The data show that road crashes are the No. 1 cause of death among young people aged 15 to 29. Young adults around the world are the worst driving risks. In the U. S. , drivers aged 15 to 24 account for about 30 percent of all driving-related accidents. Africa has only two percent of the world’s vehicles, but has the highest death rate on the road.