In 1507, the German cartographer Martin Waldseemüller produced a world map in which land called the Western Hemisphere "America", named after the Italian explorer and cartographer Amerigo Vespucci. The former British colonies first used the name of the modern country in the Declaration of Independence, the "unanimous Declaration of the thirteen United States of America" adopted by the "representatives of the United States of America, July 4, 1776 . The current name was established on November 15, 1777, when the Second Continental Congress adopted the Articles of Confederation, which stipulate, "The name of this Confederacy shall be" The United States of America. " The short form, "United States", is also standard. Other common forms include U.S. and U.S. "Columbia", a once popular name for the United States, is derived from the name of Christopher Columbus and still remains in the name of the District of Columbia. Occasionally it is called, incorrectly, "USA", leading to confusion in its adjective.
The standard way to refer to a citizen of the United States are American words and American. It also uses the word "Yankee", although usually with a derogatory tone. In Spanish is acceptable, but not exclusively, the use of "American" as a synonym for "American." Similarly, avoid the use of "American" to refer exclusively to the inhabitants of the States Unidos.Al write, often used the abbreviation "U.S.. UU. "And the initials" U.S.. " In Spanish it is entirely inappropriate, but frequent use of the acronym USA
