The United States is located in North America. It is a constitutional federal republic, that comprises of 50 states, and a federal district. The US also has five self-governing territories and other possessions. 48 of the 50 states, are contiguous and are situated between the two neighboring nations of Canada and Mexico. The state of Hawaii, which is an archipelago, is located in the mid-Pacific Ocean. Alaska, which is the largest state, is situated in the northwest corner of North America. To its east lies Canada, while Russia is situated to the west across the Bering Strait. The overseas territories of the United States are spread out in the Caribbean and the Pacific Ocean.