- 美国 - 维基百科，自由的百科全书
“ The United States ”是对美国最傳統最正式的称呼，它最早出現在 獨立宣言 與 美國憲法 中。 在官方場合說到美國時，一般必須使用此通稱。
- United States | History, Map, Flag, Population | Britannica
The United States is the fourth largest country in the world in area (after Russia, Canada, and China) The national capital is Washington, which is coextensive with the District of Columbia, the federal capital region created in 1790
- United States - The World Factbook
Explore All Countries United States North America Page last updated: December 03, 2025
- 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
- US - CNN
View the latest US news, top stories, photos and videos from around the nation To get the day’s top headlines delivered to your inbox every morning, sign up for our 5 Things newsletter
- 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
- 美国到底是“US”还是“USA”还是“America”? - 知乎
US是United States的缩写，称为“合众国”，前面要加the做限定，写成the United States或theU S 。 United States (US)是对美国最传统和正式的说法。
- USA Map | Maps of the United States of America
The United States of America (USA), for short America or United States (U S ) is the third or the fourth-largest country in the world It is a constitutional based republic located in North America, bordering both the North Atlantic Ocean and the North Pacific Ocean, between Mexico and Canada
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