The United States of America (also known as America, the UnitedStates, the US, or the USA) is a country on the continent of North America. It is the third largest country by both land area and population. It is made up of 50 states and a federal district. English is the de facto language of American government and the sole language spoken at home by 80% of Americans age five and older. Spanish is the second most commonly spoken language. The United States is a federal republic. Washington is the capital of the country.