👉 Thereva is a term in the language of North American Indians that refers to a group of people who lived in the region known as the Great Plains, which includes present-day Oklahoma and Texas. The term "thereva" means "a tribe," "people," or "group" in the language. It's important to note that there is no direct reference to a specific tribe or group of people named "Thereva" in the literature or history of North American Indian culture. However, it seems