The United Nations headquarters has been situated along the East River in Midtown Manhattan since 1952. The United States is a founding member of the UN. The United States has an established structure of foreign relations, and it had the world's second-largest diplomatic corps in 2019. 
Estados Unidos da América ( EUA; em inglês: United States of America - USA; pronunciado: [juːˈnaɪ.təd ˈsteɪʦ əv əˈmɛ.ɹɪ.kə] ), ou simplesmente Estados Unidos ou América, são uma república constitucional federal composta por 50 estados e um distrito federal. A maior parte do país situa-se na região central da América do ...
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 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. 
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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.
Die Vereinigten Staaten von Amerika ( englisch United States of America; abgekürzt USA ), auch Vereinigte Staaten (engl. United States, abgekürzt U.S., US) oder umgangssprachlich einfach Amerika (engl. America) genannt, sind eine demokratische, föderal aufgebaute Republik in Nordamerika. Sie besteht aus 50 Bundesstaaten, der Hauptstadt ...