North Carolina is one of the most important states of the USA. North Carolina is one of the United States in the east of the province. The Mid-Atlantic province is known as.North Carolina is divided into three major regions: the Eastern Plains, the Piedmont and the mountain region. The part of Atlantic coastal plain, Eastern plains of the state two-fifths occupies and productive agricultural area. Extending through the center of the state of Piedmont, a hilly plateau composed mostly of clay. The mountainous region is part of the Appalachian mountain range wide. Thanks to the geographical structure of the variability, the climate is also variable in the state structure showing in the summer the average temperature is about 25 degrees in the winter and 5 degrees.