
The United States of America is a federal constitutional republic comprising fifty states and a federal district. The country is situated almost entirely in the western hemisphere: its forty-eight contiguous states and Washington, D.C., the capital district, lie in central North America between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south; the state of Alaska is in the northwest of the continent with Canada to its east, and the state of Hawaii is in the mid-Pacific. The United States also possesses fourteen territories, or insular areas, that are scattered around the Caribbean and Pacific.
At 3.79 million square miles (9.83 million km²) and with over 300 million people, the United States is the third or fourth largest country by total area, and third largest by land area and by population. The United States is one of the world's most ethnically diverse nations, the product of large-scale immigration from many countries. Its national economy is the largest in the world, with a nominal 2006 gross domestic product (GDP) of more than US$13 trillion.
The nation was founded by the thirteen colonies of Great Britain located along the Atlantic seaboard. After proclaiming themselves as "states," they issued the Declaration of Independence on July 4, 1776. The rebellious states defeated Britain in the American Revolutionary War, the first successful colonial war of independence.
A federal convention adopted the current United States Constitution on September 17, 1787; its ratification the following year made the states part of a single republic. The Bill of Rights, comprising ten constitutional amendments, was ratified in 1791. In the nineteenth century, the United States acquired land from France, Spain, Mexico, and Russia, and annexed the Republic of Texas and the Republic of Hawaii. The American Civil War ended slavery in the United States and prevented a permanent split of the country. The Spanish-American War and World War I confirmed its status as a military power. In 1945, the United States emerged from World War II as the first country with nuclear weapons and a permanent member of the United Nations Security Council. The sole remaining superpower in the post–Cold War era, the United States is perceived by many as the dominant economic, political, cultural, and military force in the world
North Carolina (IPA: /ˌkærəˈlaɪnə/) is a state located on the Atlantic Seaboard in the southern region of the United States of America. It was one of the original Thirteen Colonies, originally known as Carolina, and the home of the first English colony in the Americas. On 20 May 1861, it became the last of the Confederate states to secede from the Union, and was readmitted on 4 July 1868. It was also the location of the first successful powered heavier-than-air flight by the Wright brothers at Kill Devil Hills near Kitty Hawk in 1903. Today, it is a fast-growing state with an increasingly diverse economy and population. As of 1 July 2006, the population estimate is 8,856,505 (a 10% increase since 1 April 2000), and the capital is Raleigh.
North Carolina has a wide range of elevation, from sea level on the coast to almost 6,700 feet (2,042 m) in the mountains. The climate in the coastal and Piedmont regions of eastern and central North Carolina is similar to other southern states such as Georgia and South Carolina, while the climate in the western mountains is closer to that found in New England or the upper Midwest. While the coastal plains, especially the tidewater areas, are strongly influenced by the Atlantic Ocean, the western, mountainous part of the state is more than 300 miles (500 km) from the coast, resulting in considerably less maritime influence. As such, the climate of the state ranges from a warm, humid subtropical climate near the coast to a humid continental climate in the mountains. Most of the state falls in the humid subtropical zone.
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