United States
country located primarily in North America
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 consisting of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States also asserts sovereignty over five major island territories and various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's fourth-largest total area and third-largest population, exceeding 341 million.
Paleo-Indians migrated from North Asia to North America at least 15,000 years ago and formed various civilizations. Beginning in 1607, British colonization established the Thirteen Colonies. The 18th-century American Enlightenment spread values of republicanism and liberalism there, and clashes with the British Crown over taxation without parliamentary representation, among other denied rights, sparked the American Revolution. Independence from Great Britain was formally declared in the Lee Resolution of July 2, 1776, two days before the Declaration of Independence. Victory in the 1775–1783 Revolutionary War brought international recognition of U.S. sovereignty.
The U.S. expanded westward through the purchase, settlement, and conquest of European- and Indigenous-controlled territory.
The public source identifies “United States” as country located primarily in North America. This brief keeps that definition visible, then builds a research path around United, States and country.
Why this record matters
A short description can identify a subject without explaining its stakes. For “United States”, the useful work is to connect “country located primarily in North America” to the records capable of establishing context and consequence.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q30. VIAF identifies the subject as 130168302. The Library of Congress control number is n78095330. Authority coordinates are 39.828, -98.579. 3 of 7 selected statements include explicit references; 6 carry qualifiers and 1 use preferred rank. The first chronological checks are 1607, 1776, 1775 and 1783.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “United States”, its source revision and the description used here.
- Expand the search: follow United States primary sources, United States archive and United research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “United States”?
- What terminology or title could unlock a more precise catalogue search?
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Search terms from this dossier
This entry incorporates text from “United States” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.