United_StatesThe United States of America (USA) is home to 310 million people – the world’s third-largest population. The USA has a history of mass immigration dating from the 17th century and it is a melting pot of cultures from around the world. Nowadays there are about sixty thousand passengers airborne over the USA at any moment. In 1999 Nicholas White spent 41 hours stuck in an elevator at the forty third floor of a New York skyscraper.