When did Arnold Schoenberg consolidate the results of his thinking into a twelve-tone method?

__________ is not a Greek playwright

A. Aeschylus B. Pythagoras C. Euripides D. Aristophanes E. Sophocles

The Stele of Naram-Sin commemorates

a. a military victory. b. the dedication of Naram-Sin's palace. c. the first law code. d. the grave of Naram-Sin.