United States
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. It is a federation of 50 states, which also includes its federal capital district of Washington, D.C., and 326 Indian reservations. The 48 contiguous states border Canada to the north and Mexico to the south. The State of Alaska is non-contiguous and lies to the northwest, while the State of Hawaii is an archipelago in the Pacific Ocean. Outside the union of states, the U.S. also asserts sovereignty over five major unincorporated island territories and various uninhabited islands.