Usa update

  The United States of America is a country located primarily in North America. It consists of 50 states, a federal district, five major unincorporated territories, 326 Indian reservations, and nine minor outlying islands.The 48 contiguous states and Washington, D.C., are in central North America between Canada and Mexico. The state of Alaska is the northwestern part of North America and the state of Hawaii is an archipelago in the mid-Pacific Ocean. The United States has a total area of 3.8 million square miles (9.8 million square kilometers), of which 3.6 million square miles (9.3 million square kilometers) is land. The country is the third or fourth largest in the world by total area, and the second or third largest by land area. The United States is a federal republic and a representative democracy. It is a founding member of the United Nations, World Bank, Organization of American States, NATO, and ANZUS. The U.S. dollar is the official currency of the United States. The count...