Which of the following groups completely disappeared from Texas before it became a part of the United States?

The Jumanos had largely disappeared as a distinct people from Texas by the late 1700s, before Texas joined the United States in 1845. The Tiguas remained in the El Paso area, while Caddo and Wichita communities also had histories in Texas after that period. Therefore, the group that had completely disappeared from Texas before annexation was the Jumanos.

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