Americans are citizens of the United States of America. The country is home to people of many different national origins.As a result, American culture and law does not equate nationality with race or ethnicity, but with citizenship and allegiance.

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The American Psychological Association (APA) is a scientific and professional organization that represents psychologists in the United States. APA educates the public about psychology, behavioral science and mental health; promotes psychological science and practice; fosters the education and training of psychological scientists, …

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The Whitney Museum of American Art. Explore works, exhibitions, and events online. Located in New York City.

The American Civil Liberties Union (ACLU) is a national organization that works daily in courts, legislatures and communities to defend the individual rights and liberties guaranteed by the Constitution and laws of the United States.

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ACOG is a nonprofit organization of women’s health care physicians advocating highest standards of practice, continuing member education and public awareness of women’s health care issues.

Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change …