The United States of America was a federal constitutional republic comprising fifty states, one federal district, and fourteen territories. The country is situated almost entirely in the western hemisphere: its forty-eight contiguous states and Washington, D.C., the capital district, lie in central North America between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south; the state of Alaska is in the northwest of the continent with Canada to its east, and the state of Hawaii is in the mid-Pacific. Due to treaties with native peoples, the federal government also recognizes a number of dependent sovereignties that answer only to the federal government. U.S. territories, or insular areas, are scattered around the Caribbean and Pacific.
The United States is an ethnically diverse nation. From its earliest days as colony to the Modern era, the nation attracted many different peoples around the world. Indeed, at the end of the 20th century, the nation boasted prosperous economy, stability, as well as a state based on the principles of freedom, similarly to other Western countries in Europe.
- United States of America on Wikipedia