The Caddoan People migrate to the Mississippi Valley
The Caddos came to East Texas from the Mississippi Valley around 800 A.D. Their territory included parts of what is now Oklahoma, Arkansas, Louisiana and East Texas. At the height of their mound-building culture— around 1200 A.D.—the Caddos numbered 250,000 people.
The Caddos were the most advanced Native American culture in Texas. They lived in tall, grass-covered houses in large settlements with highly structured social, religious and political systems. The Caddos raised corn, beans, squash and other crops. They also hunted the bear and deer of East Texas and headed west for annual buffalo hunts.
The Hasinai were the largest confederation of Caddos in Deep East Texas. They lived along the Neches and Angelina rivers, with one of their most powerful settlements in the present Caddo Mounds area west of Alto. The Nacogdoche tribe is included among these Hasinai Caddos.
“Taychas” to “Tejas” to “Texas”
The Caddos were travelers and traders and they greeted the Spaniards, when they met them in the seventeenth century, with the cry of "Taychas!" which meant "friend." The Spanish subsequently called the Caddos the "Tejas," and Spanish land east of the Trinity became known as the Province of Tejas, which later gave its name to all of Texas.