Native Americans were all over present-day Texas, one nation especially.
While you would have seen lots of native nations throughout Texas before settlers moved in, the Comanche were dominant in Texas from the mid-1700s to the mid-1800s. The nation was so powerful that Sam Houston, Republic of Texas president, aimed to sign a peace treaty acknowledging the border between Texas and Comancheria, the tribe’s lands. The Comanche nation eventually faced diseases, the slaughtering of buffalo (which limited its ability to survive as hunters) and was forced into reservations.
Photo via UTSA Libraries Special Collections