4. How were the Coahuiltecan and the Karankawa different?

More is known of the Karankawa, who existed as a people in Texas until about 1850. The Karankawas lived in the same nomadic lifestyle as the Coahuiltecans, living in small bands, hunting with bow and arrow, eating whatever was available, and living in huts made of a simple wooden framework covered by skins or mats.

the name of the theory is landmass theory.