The area you are asking about is the Atlantic Coastal Plain. This which flatland region extends 2,200 miles along the Appalachian Mountain range, from New York to Florida.
Before their explusion from their eastern lands, the Cherokee nation encompassed most of the southeastern United States, particularly Georgia, Tennessee, North Carolina, and South Carolina. Even though the Cherokee and other southeastern Native American groups had more or less assimilated into white society and had become known as the "civilized tribes," desire for their land caused many whites to turn against them, and in 1830, led by President Andrew Jackson, the Indian Removal Act forced them out of the east in what has become known as the Trail of Tears.
The coastal plain and The southern Appalachian Mountains.