The term Romantic was:

A. applied by music critics in the twentieth century.
B. applied only to music, not literature, of the nineteenth century.
C. applied only to literature, not music, of the nineteenth century.
D. used by writers of literature in the nineteenth century and adopted by musicians.

D. Used by writers of literature in the nineteenth century and adopted by musicians

the answer is b: the religion they practice.

here's why:

there were many different native american tribes and those with similar characteristics formed a main tribe or nation. each had its own language, religion and customs.

i believe the answer is d.