The United States of America is a constitutional federal republic comprising fifty states and a federal district. The country is situated mostly in central North America. United States consists of 51 administrative divisions (50 states and 1 district) and the capital city is Washington, D.C.. The population of United States is approximately 304 million people and the official language is English. North Carolina (NC) is a state located on the Atlantic Seaboard in the southeastern United States. North Carolina is known as The Tar Heel State and its capital city is Raleigh. The population of is approximately 9 million people and the spoken language is English.