Which composer invented the symphonic poem?

All of the following are themes of Angels in America except:

a. political and religious corruption. b. the decline of the family. c. the deterioration of the environment. d. gay rights. e. the tragic lives of people with ordinary jobs

What is the role of musical instruments in traditional Native-American music of North America? Do instrumental ensembles such as Western classical orchestras find any counterparts in traditional Native-American music?

What will be an ideal response?