United States
The United States of America (USA or U.S.A.), commonly known as the United States (US or U.S.) or America, is a country primarily located in North America. It is a federal union of 50 states, the federal capital district of Washington, D.C., and 326 Indian reservations.}} The 48 contiguous states border Canada to the north and Mexico to the south. The State of Alaska lies to the northwest, while the State of Hawaii is an archipelago in the Pacific Ocean. The United States also asserts sovereignty over five major island territories and various uninhabited islands.|}}}} The country has the world's third-largest land area,, the United States is the third-largest country in the world by land area, behind Russia and China. By total area (land and water), it is the third-largest, behind Russia and Canada, if its coastal and territorial water areas are included. However, if only its internal waters are included (bays, sounds, rivers, lakes, and the Great Lakes), the U.S. is the fourth-largest, after Russia, Canada, and China.Coastal/territorial waters included:
Only internal waters included: |name=largestcountry}} second-largest exclusive economic zone, and third-largest population, exceeding 334 million.
Paleo-Indians migrated across the Bering land bridge more than 12,000 years ago, and went on to form various civilizations and societies. British colonization led to the first settlement of the Thirteen Colonies in Virginia in 1607. Clashes with the British Crown over taxation and political representation sparked the American Revolution, with the Second Continental Congress formally declaring independence on July 4, 1776. Following its victory in the 1775–1783 Revolutionary War, the country continued to expand across North America. As more states were admitted, a North-South sectional division over slavery led to the secession of the Confederate States of America, which fought the remaining states of the Union during the 1861–1865 American Civil War. With the Union's victory and preservation, slavery was abolished nationally. By 1890, the United States had established itself as a great power. After Japan's attack on Pearl Harbor in December 1941, the U.S. entered World War II. The aftermath of the war left the U.S. and the Soviet Union as the world's two superpowers and led to the Cold War, during which both countries engaged in a struggle for ideological dominance and international influence. Following the Soviet Union's collapse and the end of the Cold War in 1991, the U.S. emerged as the world's sole superpower, wielding significant geopolitical influence globally.
The U.S. national government is a presidential constitutional federal republic and liberal democracy with three separate branches: legislative, executive, and judicial. It has a bicameral national legislature composed of the House of Representatives, a lower house based on population; and the Senate, an upper house based on equal representation for each state. Substantial autonomy is provided by federalism, with a political culture promoting liberty, equality, individualism, personal autonomy, and limited government.
One of the world's most developed countries, the United States has had the largest nominal GDP since about 1890 and accounted for 15% of the global economy in 2023. It possesses by far the largest amount of wealth of any country and has the highest disposable household income per capita among OECD countries. The U.S. ranks among the world's highest in economic competitiveness, productivity, innovation, human rights, and higher education. Its hard power and cultural influence have a global reach. The U.S. is a founding member of the World Bank, Organization of American States, NATO, and United Nations, as well as a permanent member of the UN Security Council. Provided by Wikipedia
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122by Jaidee Anchalee, Travers Thomas, Kosaisavee Varakorn, Edstein Michael D, Lek-Uthai Usa, Suwanarusk Rossarin, Sharrock Wesley W, Sriprawat Kanlaya, Price Ric N, Nosten François, Russell BruceGet access
Published in Malaria Journal (2008)
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124by Schindelegger, Michael, Harker, Alexander A., Ponte, Rui M., Dobslaw, Henryk, Salstein, David A., Harker, Alexander A.; 1 Institute of Geodesy and Geoinformation University of Bonn Bonn Germany, Ponte, Rui M.; 2 Atmospheric and Environmental Research, Inc. Lexington MA USA, Dobslaw, Henryk; 3 Department 1: Geodesy GFZ German Research Centre for Geosciences Potsdam Germany, Salstein, David A.; 2 Atmospheric and Environmental Research, Inc. Lexington MA USAGet access
Published in Journal of Geophysical Research: Oceans (2021)
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127by Qu, Tangdong, Gao, Shan, Fukumori, Ichiro, Fine, Rana A., Lindstrom, Eric J., Qu, TD, Univ Hawaii Manoa, IPRC SOEST, 1680 East West Rd, Honolulu, HI 96822 USAGet access
Published in Journal of Physical Oceanography (2009)
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128by +27723039124 Trusted And Approved Death Spells Caster In USA, U.K, Australia, Austria, Netherlands Belgium, Germany, France, Monaco, Ireland, Switzerland, Scotland, New Zealand, Poland, Iceland, Finland, Albania, Armenia, Lithuania.Get access
Published 2024
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132by Wang, Xuchen, Ma, Haiqing, Li, Ronghua, Song, Zhensu, Wu, Jinping, Wang, XC (reprint author), Univ Massachusetts, Dept Environm Earth & Ocean Sci, 100 Morrissey Blvd, Boston, MA 02125 USA.Get access
Published in Global Biogeochemical Cycles (2012)
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133by Usa Boonyuen, Duantida Songdej, Sasipa Tanyaratsrisakul, Suparat Phuanukoonnon, Kamonwan Chamchoy, Aun Praoparotai, Phonchanan Pakparnich, Sirapapha Sudsumrit, Thomas Edwards, Christopher T. Williams, Rachel L. Byrne, Emily R. Adams, Mallika ImwongGet access
Published in Malaria Journal (2021)
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134by Umaporn Limothai, Nattawat Jantarangsi, Natthasit Suphavejkornkij, Sasipha Tachaboon, Janejira Dinhuzen, Watchadaporn Chaisuriyong, Supachoke Trongkamolchai, Mananya Wanpaisitkul, Chatchai Chulapornsiri, Anongrat Tiawilai, Thawat Tiawilai, Terapong Tantawichien, Usa Thisyakorn, Nattachai SrisawatGet access
Published in PLOS Neglected Tropical Diseases (2022)
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136by Department of Fisheries and Aquatic Sciences, University of Florida, 7922 NW 71st Street, Gainesville, FL 32653, USA ( host institution ), Frazer, Thomas K ( author ), Quetin, Langdon B ( author ), Ross, Robin M ( author )Get access
Published in Journal of Experimental Marine Biology and Ecology (2002)
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137by Fisheries and Aquatic Sciences Program, 7922 NW 71st Street, University of Florida, Gainesville, FL 32653-0600, USA ( host institution ), Barry, Savanna C. ( author ), Frazer, Thomas K. ( author ), Jacoby, Charles A. ( author )Get access
Published in Journal of Experimental Marine Biology and Ecology (2013)
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