The Carolinas refer to two U.S. states, North Carolina and South Carolina, located in the southeastern region of the country. They are known for their diverse geography, which includes coastal plains, rolling hills, and the Appalachian Mountains. Both states have a rich history, with significant contributions to American culture and economy. North Carolina is famous for its research and technology sectors, particularly in the Research Triangle area, while South Carolina is known for its historic cities like Charleston and Columbia. The Carolinas also boast beautiful beaches, such as those found in the Outer Banks and Myrtle Beach, attracting tourists year-round.