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  1. United States - Wikipedia

    The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 states and a federal capital district, …

  2. United States | History, Map, Flag, & Population | Britannica

    10 小时之前 · Besides the 48 conterminous states that occupy the middle latitudes of the continent, the United States includes the state of Alaska, at the northwestern extreme of North America, and the …

  3. The U.S. and its government - USAGov

    U.S. facts and figures Learn about the United States, including American history, the president, holidays, the American flag, census data, and more.

  4. United States - The World Factbook

    2026年1月13日 · Explore All Countries United States North America Page last updated: January 13, 2026

  5. A Country Profile - Destination USA - Nations Online Project

    Discover the United States of America: vacation, accommodation, hotels, attractions, festivals, events, tourist boards, state parks, nature, tours, and much more.

  6. United States Map - World Atlas

    2024年1月22日 · The United States, officially known as the United States of America (USA), shares its borders with Canada to the north and Mexico to the south. To the east lies the vast Atlantic Ocean, …

  7. United States Population (2025) - Worldometer

    Population of the United States: current, historical, and projected population, growth rate, immigration, median age, total fertility rate (TFR), population density, urbanization, urban population, country's …

  8. United States (US) | Culture, Facts & Travel | - CountryReports

    2 天之前 · The United States is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Native …

  9. United States - New World Encyclopedia

    The United States of America —also referred to as the United States, the USA, the U.S., America, [7] or (archaically) Columbia –is a federal republic of 50 states and the District of Columbia. Each of the 50 …

  10. U.S. News: Top U.S. News Today | AP News

    The US political climate spurs efforts to reclaim the MLK holiday Communities across the U.S. held parades, panels and service projects for the 40th anniversary of Martin Luther King Jr. Day.