The United States of America, also known as the United States, the U.S., the U.S.A., the U.S. of A, the States, and America, is a country in North America. A federal republic, the United States shares land borders with Canada and Mexico, and extends from the Atlantic Ocean to the Pacific Ocean. Its capital is Washington, D.C.
The present-day continental United States has been inhabited for at least 15,000 years by Native Americans. After 16th-century European exploration and settlement, the English established new colonies, and gained control of others, in the eastern portion of the continent in the 17th and early 18th centuries. On 4 July 1776, at war with Britain over fair governance, thirteen of these colonies declared their independence; in 1783, the war ended in British acceptance of the new nation. Since then, the country has more than quadrupled in size: it now consists of 50 states, one federal district, and a number of overseas territories.
At over 3.7 million square miles (over 9.1 million km²), the U.S. is the third largest country by area. It is also the world's third most populous nation, with nearly 300 million people.
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United States :: North America

Marine Living History Association - Founded in 1998 as a non-profit organization to promote education, research, and preservation of America's rich national heritage of the naval services.
Meta Description: [ Navy & Marine Living History
Association. ]
Air Mail Pioneers - U.S. Air Mail Service Pioneers aviation history articles. Airmail milestones early pilots. Photographs of antique airplanes. Post Office ran mail 1919-1927. Commercial airlines worldwide origins.
Meta Description: [ U.S. Air Mail Service Pioneers avation history articles. airmail milestones early pilots. Photographs of antique airplanes. Post Office ran mail 1919-1927. Commercial airlines worldwide origins ]
American Antiquarian Society - An independent research library focusing on American history, literature, and culture through 1876.
American Association for State and Local History - Provides leadership, service and support for the preservation and interpretation of American state and local history.
American Association of the History of Medicine - An academic society devoted to the history of medicine and all aspects of health.
Meta Description: [ The American Association of the History of Medicine is an academic society devoted to the history of medicine and health in all of its aspects. ]
American Historical Association - The professional organization for all historians.
American Printing History Association - Founded in 1974 to encourage the study of printing history and its related arts and skills, including calligraphy, typefounding, typography, papermaking, bookbinding, illustration, and publishing.
Meta Description: [ The American Printing History Association encourages the study of printing history and related arts including calligraphy, typefounding, typography, papermaking, bookbinding, illustration, and publishing. ]
Archivists for Congregations of Women Religious - ACWR - a roundtable of the Society of American Archivists, was created to address the specialized needs of religious archives.
Meta Description: [ Official home page of the ACWR - Archivists for Congregations of Women Religious. Mission, Roots, Identity, Membership information ]
Army Historical Foundation - Dedicated to the promotion and preservation of the history and traditions of the American soldier.
Meta Description: [ This is the official web site of the Army Historical Foundation, official fundraisers of the National Museum of the United States Army. ]
ASECS American Society for Eighteenth-Century Studies - An interdisciplinary group dedicated to the advancement of scholarship in all aspects of the period from the later seventeenth through the early nineteenth century.
Atomic Heritage Foundation - A non-profit dedicated to preservation and interpretation of the Manhattan Project and Atomic Age. Information about historic properties, museum exhibits, publications, and documentary films.
Meta Description: [ Atomic Heritage Foundation ]
Constitution Society - Comprehensive collection of constitutional materials, including books, articles, and tools.
Meta Description: [ Comprehensive collection of constitutional materials, including books, articles, and tools. ]
Discovery Expedition - Nonprofit organization rediscovering the legacy of Lewis and Clark through reenactments and other living history programs. Site includes expedition history, photos and other details of bicentennial activities, and other news and information.
ety - The organization is interested in history of American Jews.
Florida Lighthouse Association - A not-for-profit organization dedicated to the preservation of Florida's lighthouses and maritime heritage.
Fort Smith Historical Society Inc. - A non-profit organization that locates, identifies, collects and preserves historical data; records oral history; and publishes source materials and historical articles of the Fort Smith area.
Foundation for Ancient Research and Mormon Studies - A collection of writings, studies, and information about research on The Book of Mormon and other manuscripts at Brigham Young University.
Friends of the Little Bighorn Battlefield - Website includes historical background, board of directors, membership, photos and complete coverage of the Indian Memorial.
Meta Description: [ George Custer -- The Friends of the Little Bighorn is the official non-profit organization affiliated with the Little Bighorn Battlefield where George Custer met his fate. ]
Heritage Preservation Association - Organization acting to protect and preserve the symbols, culture and heritage of the American South.
Huguenot Society of America - Promotes the cause of religious freedom, perpetuates the memory of the Huguenot settlers in America, and commemorates the principal events in Huguenot history.
Isle Royale Natural History Association - A non-profit educational organization promotes, in partnership with the National Park Service, the public's understanding, appreciation, and enjoyment of Michigan's Isle Royale National Park and Keweenaw National Historical Park.
Meta Description: [ A non-profit educational organization, the Isle Royale Natural History Association (IRNHA), in partnership with the National Park Service, promotes the public's understanding, appreciation, and enjoyment of Isle Royale National Park and Keweenaw National Historical Park. ]
Labor and Working Class History Association - An organization of scholars, union members, students, and citizens promoting a wider understanding of the history of working class people, their communities, and their organizations in the United States.
Lewis and Clark Bicentennial Council - Commemorating the legacy of the Lewis and Clark expedition of 1803-1806.
Lewis and Clark Trail Heritage Foundation - The Foundation's mission is to honor the remarkable historic legacy of Lewis and Clark through research, education, preservation, promotion, and coordination.
Living History Farms - A non-profit, historical, educational foundation located in Urbandale, Iowa, USA.
Maryland Association of History Museums - An alliance of historical, cultural, and educational institutions created to speak for and to enhance the professionalism and effectiveness of all organizations that collect, hold, interpret and protect the cultural and material heritage of the State.
Montana Historical Society - Preserve for future generations representative selection of all historic resources (art, records, books, photographs, oral histories, artifacts, journals, sites, buildings) important to an understanding of Montana history.
Meta Description: [ mt.gov is the Montana's Official State Website ]
National Women's History Project - Regarded as the clearinghouse for U.S. women's history information and resources, the NWHP site provides excellent links to biography-rich sites for student researchers, program ideas for all constituencies, a downloadable Test Your Women's History I.Q. quiz sheet, and other delights.
Meta Description: [ The National Women's History Project's Mission ]
Organization of American Historians (OAH) - Learned society devoted to the study of American history. Publisher of the Journal of American History, the OAH Newsletter, the OAH Magazine of History and Talking History Radio Program.
Meta Description: [ Organization of American Historians, the largest learned society devoted to the study of American History. Publisher of the Journal of American History, the OAH Newsletter, the OAH Magazine of History and Talking History Radio Program ]
Pere Marquette Historical Society, Inc. - Comprehensive historical information on the Pere Marquette Railroad, which served Michigan, Ontario, Indiana Illinois, Ohio and Wisconsin. Contains maps, equipment rosters, timelines and photos of preserved equipment.
Meta Description: [ Historical information including equipment rosters, maps, photos, timelines and preservation news related to the Pere Marquette Railroad ]
Preservation of American Hellenic History - A national umbrella website coordinating local, community organizations for the preservation of Greek (Hellenic) American history.
Meta Description: [ National umbrella website coordinating local organizations and providing resources for Greek American history. Homepage, Table of Contents. ]
Southwest Oral History Association - Founded in 1981 to serve practitioners of oral history in Arizona, southern California, Nevada, New Mexico and contiguous areas. Site provides publications list, meetings and workshops, information, and constitution.
The American Association for History and Computing (AAHC) - Dedicated to linking the study of history with computer technology, with annual meeting and prizes, membership, journal archives, constitution, officers and tenure guidelines.
The Gilder Lehrman Institute of American History - The Gilder Lehrman Institute of American History promotes interest in history through lectures, exhibitions, teacher seminars, prizes and fellowships, and electronic resources including an online historical textbook and annotated historical documents.
The Independence Hall Association - A nonprofit, tax-exempt organization founded in 1942 to spearhead the creation of Independence National Historical Park. Now develops and publishes web content dealing with Philadelphia and 18th-century American history.
Meta Description: [ Independence Hall Association ]
The Jefferson Legacy Foundation - A non-profit, non-partisan organization which promotes education about Thomas Jefferson through film, web, library, outreach, and numerous support programs.
Meta Description: [ Inspiring participation in public affairs - in the spirit of Thomas JeffersonÂ’s life, thought, and ideals. Non-profit, non-partisan organization promoting education about Thomas Jefferson through film, web, library, outreach and numerous support programs ]
The National Coordinating Committee for the Promotion of History - Advocacy group provides current information on legislation and legislative proposals, hearings, and federal policy issues of concern to historians, archivists, librarians, and the general public.
The Society of Southwest Archivists - Serves over 600 special collections librarians, archivists, preservationists, conservators, and records managers in Arizona, Arkansas, Louisiana, Oklahoma, New Mexico, and Texas.
The Tejano Association for Historical Preservation - A non-profit organization formed in 1989 to identify and preserve buildings and sites that have historical or archaeological significance to the Hispanic, early Texas, French, and native/indigenous cultures.
Meta Description: [ The Tejano Association For Historical Preservation is involved in preserving the history of the Tejano, the Mexican Texan, influence on the development of Texas. ]
The White House Historical Association - Tas tours, lesson plans, official White House Christmas ornaments, books, and gifts.
Meta Description: [ The White House Historical Association is a nonprofit that conserves and interprets the White House. The site features presidential portraits, white house FAQs and the White House Christmas ornament. ]
Thomas Paine National Historical Association - Founded in 1884. Publishes a scholarly journal and provides information on the Revolutionary activist, including a full-text archive of many of his works, as well as membership information, and links to related material.
Three Societies for Men with Revolutionary Ancestors - Explanation of the history of and relationships between the Society of the Cincinnati, the Society of the Sons of the Revolution, and the Sons of the American Revolution.
US Corps of Topographical Engineers - History and techniques of the Corps, emphasizing the Mexican War, western expansion and the Civil War.
Meta Description: [ Corps of Topographical Engineers is a living history group portraying the corps' role in Western exploration, the Mexican War and the Civil War ]
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