Caddo

The Caddo settled in the Neches River valley in eastern Texas in about 800 A.D. They eventually spread to an area that covered eastern Oklahoma, western Arkansas, northwestern Louisiana, and northeastern Texas; they were the dominant group until the French settlers arrived. The Caddoans were mound builders and brought their mound building tradition with them when they settled in eastern Texas. A new development in maize production in 800 A.D. led to a population growth that also led to large trade networks, which expanded the Caddo culture.

The Caddoan settlements are the most southwestern of all the mound building ceremonial centers. The area settled in however, is similar to areas of other ceremonial centers. It had rich resources from an alluvial plain. The Caddoans also stayed connected with other mound building groups through economic and political ties. The Caddo people introduced agriculture, a stable political system, rich religious ceremonies, and trade to the Neches River valley for the first time.

http://www.skiles.net/caddo/t&t/t-t.htm

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