The United States of America ( U.S.A. or USA ), commonly known as the United States ( U.S. or US) or America, is a transcontinental country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine minor outlying islands, [i] and 326 Indian reservations with limited sovereignty.
The United States of America ( U.S.A or USA ), commonly known as the United States ( U.S or US) or America, is a sovereign country located mostly within North America and is divided up into 50 states. Forty-eight of these states along with the District of Columbia border each other between the Pacific and Atlantic Oceans.
The history of the lands that became the United States began with the arrival of the first people in the Americas around 15,000 BC. Numerous indigenous cultures formed, and many saw transformations in the 16th century away from more densely populated lifestyles and towards reorganized polities elsewhere.
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The table below lists the 50 states, with their current capital, largest city,[A] the date they ratified the U.S. Constitution or were admitted to the Union, population and area data, and number of representative(s) in the U.S. House of Representatives.[B]
This list does not include Indian reservations which have limited tribal sovereignty, nor Freely Associated Stateswhich participate in some U.S. government programs but are not under U.S. sovereignty.
Radan, Peter (2007). Creating New States: Theory and Practice of Secession. Ashgate Publishing, Ltd. ISBN 9780754671633.
The term "United States", when used in the geographical sense, is the contiguous United States, the state of Alaska, the island state of Hawaii, the five insular territories of Puerto Rico, Northern Mariana Islands, U.S. Virgin Islands, Guam, and American Samoa, and minor outlying possessions.