The United States of America (USA or U.S.A.), commonly known as the United States (US or U.S.) or America, is a country primarily located in North America.

Today, the United States is one of the world's most ethnically mixed and multicultural nations. It is the product of large-scale immigration from many countries ...

List · Alabama · Alaska · Arizona · Arkansas · California · Colorado · Connecticut · Delaware · Florida.

The history of the lands that became the United States began with the arrival of the first people in the Americas around 15,000 BC.