英国和美国区别

独立战争以前，英国领导美国

独立战争到二战之间，地位均等

二战以后，美国领导英国

The United States of America (commonly referred to as the United States, the U.S., the USA, or America) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its 48 contiguous states and Washington, D.C., the capital district, lie 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 Russia to the west across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses several territories, or insular areas, in the Caribbean and Pacific.

At 3.79 million square miles (9.83 million km2) and with about 307 million people, the United States is the third or fourth largest country by total area, and the third largest by land area and population. The