United States


July 5, 2022

The United States of America is a federal and constitutional republic made up of 50 states and one federal district. The republic is located mostly in the center of the American subcontinent, where the 48 contiguous or continental states are located and Washington DC, the capital district, which borders Canada to the north and Mexico to the south. The state of Alaska lies to the northwest of the subcontinent, bordering Canada to the east and south and Russia to the west, crossing the Bering Strait. The state of Hawaii is located in the north-central Pacific Ocean. The United States also administers several territories and island areas of the Pacific Ocean and the Caribbean Sea. With an area of ​​9.38 million km², and with more than 330 million inhabitants today, the United States of America is the third largest country in the world in area and population. It is one of the most ethnically diverse countries, the result of mass immigration from many continents. The U.S. economy is the largest national economy in the world, with a gross domestic product (GDP) in excess of $ 13 trillion in 2006, or 19 percent of world production. The nation was founded by thirteen British colonies located on the Atlantic coast. They proclaimed themselves "states" and made the Declaration of Independence on July 4, 1776. The rebel states defeated Britain in the war, America's first successful colonial war of independence. The Philadelphia Convention adopted the current constitution of the United States on September 17, 1787; the ratification of this the following year made the states integral parts of a single republic. The Bill of Rights in the United States Constitution, which contains ten amendments on the rights and freedoms of citizens, was ratified in 1791. The United States is a permanent member of the United Nations Security Council. Today, they are the largest military power after the Cold War, and a major force in the world economy.


It has been suggested that the term America was coined in the 16th century in honor of the Italian explorer and cartographer Amerigo Vespucci to refer to all the lands of the Western Hemisphere. The name of the new federal state was first recorded in the United States Declaration of Independence, which was the "Unanimous Declaration of the Thirteen United States of America" ​​adopted by the "representatives of the United States of America." July 4, 1776. The most common abbreviations are the United States and the United States, and are colloquially called "America." The most common gentile and adjective in the United States is American, followed by American. The use of this term, however, is controversial, especially in Latin America, since citizens of countries in this region use the American gentilicio to refer to all individuals born on the American continent. In Catalan, the most appropriate and unambiguous gentilicio is American.

Physical geography

The United States is located almost entirely in the Western Hemisphere: the forty-eight continental states are located in the center of the American subcontinent and extend from the Atlantic Ocean to the Pacific. They are bounded on the north by Canada, and on the south by Mexico and the Gulf of Mexico. Alaska, the largest surface area and separate from the continental states by Canada, is bordered by the Pacific Ocean to the south and the Arctic Ocean to the north. Hawaii is an archipelago in the central Pacific in southeastern North America. The United States is the third or fourth largest country in the world — depending on how territorial disputes between China and India are viewed. The United States also administers several island territories in the Caribbean Sea and the Pacific Ocean. The coastal plain of the Atlantic gives rise to deciduous forests and the Piedmont mountain range. The mountain range of