Published online by Cambridge University Press: 25 January 2017
Since Haag's article “Early Horizons in the Southeast” appeared some time ago, considerable data have accumulated which further delimit the southeastern archaeological area. Instead of covering the area south of the Ohio River and east of the Mississippi River, as noted by Haag, it more nearly approximates that region covered by the eastern half of the state of Tennessee; the southern half of North Carolina; all of Mississippi, Alabama, Georgia, South Carolina, and Florida; and the eastern portion of Louisiana—most of which lie in the Coastal Plain and in the northern portion of the Piedmont section. Climatic as well as physiographic and cultural conditions were determinants of the type and kind of aboriginal sites found in this geographical section of the United States.