The United States has a population of over 305 million people spread across 3.7 million square miles. Some key facts: - The name "United States of America" was proposed by Thomas Paine and first used in the Declaration of Independence in 1776. - Major US presidents include Dwight Eisenhower, George W. Bush, John F. Kennedy, and Barack Obama. - The White House in Washington D.C. has been the home and workplace of US presidents since 1800. - The US has a large, capitalist economy with steady growth and is a top producer of goods like corn, wheat, cars and electronics. - Famous American monuments include the Statue of Liberty and Empire State