USA 2
At over 3.7 million square miles (over 9.6 million kmē) and with over 300 million people, the United States is the third or fourth largest country by total area and third largest by population. With a gross domestic product (GDP) of over $13 trillion, the U.S. has the largest national economy in the world. GDP per capita ranks the U.S. first among large economies.
American society is the product of large-scale immigration and is home to a complex social structure as well as a wide array of household arrangements. The U.S. is one of the world's most ethnically and socially diverse nations.
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