America is also called the United States, USA, US and United States of America. This country was established long time ago in the year of 1776. America is the 4th largest country in the world. The estimated population in the United States is about 330 million people and this country has the best economy overall. Alaska is the largest state by land and it was purchased from Russia in the year of 1867 for only 7.2 million dollars. “America is another name for opportunity.” See below for some American wallpapers.