What are societies that depend on herds of domesticated animals for their food called

Pastoralists is the correct answer.

Pastoralism is a type of subsistance system. Pastoralists depend on herds of domesticated animals for their food. In order to obtain food for their animals, most pastoral societies are nomadic wanderers. They prefer to adopt a nomadic lifestyle for different reasons, such as avoiding conflicts and government restrictions.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain