Cities eventually dotted the coast to support local economies and serve as trade hubs.
The United States is a highly developed country, with the world's largest economy by nominal GDP and second-largest economy by PPP, accounting for approximately a quarter of global GDP. Joseph Reed, Moylan expressed his wish to carry the "full and ample powers of the United States of America" to Spain to assist in the revolutionary war effort. The singular form is now standard; the plural form is retained in the idiom "these United States". S." refer to the country adjectivally ("American values", "U. Monks Mound in Cahokia, a UNESCO World Heritage Site and the largest and most influential settlement in Mississippian culture.
In 1507, the German cartographer Martin Waldseemüller produced a world map on which he named the lands of the Western Hemisphere America in honor of the Italian explorer and cartographer Amerigo Vespucci (Latin: The first documentary evidence of the phrase "United States of America" is from a letter dated January 2, 1776, written by Stephen Moylan, Esq., George Washington's aide-de-camp and Muster-Master General of the Continental Army. The second draft of the Articles of Confederation, prepared by John Dickinson and completed by June 17, 1776, at the latest, declared "The name of this Confederation shall be the 'United States of America The short form "United States" is also standard. The difference is more significant than usage; it is a difference between a collection of states and a unit. The concrete staircase follows the approximate course of ancient wooden stairs.
The war ended in 1783 with the United States becoming the first country to gain independence from a European power.
The current constitution was adopted in 1788, with the first ten amendments, collectively named the Bill of Rights, being ratified in 1791 to guarantee many fundamental civil liberties.
Over time, indigenous cultures in North America grew increasingly complex, and some, such as the pre-Columbian Mississippian culture in the southeast, developed advanced agriculture, grand architecture, and state-level societies.
Three UNESCO World Heritage Sites located in the United States are credited to the Pueblos: Mesa Verde National Park, Chaco Culture National Historical Park and Taos Pueblo.For other uses, see America (disambiguation), US (disambiguation), USA (disambiguation), and United States (disambiguation). Forty-eight states and the capital's federal district are contiguous and located in North America between Canada and Mexico.The state of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones.In the southern Great Lakes region, the Iroquois Confederacy (Haudenosaunee) was established at some point between the twelfth After his initial landfall in January 1778 at Waimea harbour, Kauai, Cook named the archipelago the "Sandwich Islands" after the fourth Earl of Sandwich—the acting First Lord of the Admiralty of the British Royal Navy.After Spain sent Columbus on his first voyage to the New World in 1492, other explorers followed.The French established their own as well along the Mississippi River.