How is the modern department of defense different from old department of war?

The mongols were descendants of a. pastoral nomadic tribes b. tibetan tribes c. shang nobility

Which events are correlated but do not necessarily have a causal relationship?

Jackson pollock described his art style in the following quote: “new needs need new techniques.… it seems to me that the modern painter cannot express this age, the airplane, the atom bomb, the radio, in the old forms of the renaissance or of any other past culture. each age finds its own technique.” what point is pollock making about the new styles of art?