Individualism.
One of the peculiarities of Americans, which make them different from the rest of the world - that's their devotion to individualism. According to the G. Althen's "American Values and Assumptions", americans are trained from very early in their lives to consider themselves as separate individuals who are responsible for their own sitations in life and their own destinies; they're not trained to see themselves as members of a close-knit interdependent family, religious group, tribe, nation, or any other collectivity. The famous book of the Dr. Benjamin Spock "Dr. Spock's Baby and Child Care", to which millions of American parents have long turned for information and advice on raising their children also asserts that: "In the United States... very few children are raised to believe their personal destiny is to serve their family, their country, their God. Generally children are given the feeling that they can set their own aims and occupation in life, according to their inclinations." (1998; p. 7)