Question: The USS Luiseno was named after the tribe of Native Americans with how many cultural/linguistic divisions?
Sentence (from "USS Luiseno (ATF-156)"): Named after the Luiseño peoples (the southernmost division of the Shoshone Indians of California, who received their name from Mission San Luis Rey de Francia, the most important Spanish mission in their territory), she was the only U.S. Naval vessel to bear the name.
Relevant evidence: Yes