The United States is located in North America, has over 310 million inhabitants across 50 states, and covers an area of over 9.83 million square kilometers, making it one of the largest countries by area and population. Its capital is Washington D.C. on the mid-Atlantic coast. The climate varies widely from humid subtropical in the south to humid continental in the north, with California's climate ranging from arid to subarctic depending on location.
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